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Metal or metal oxide

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051 - Abrasive tool making process, material, or composition

051307000 - WITH INORGANIC MATERIAL

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DocumentTitleDate
20090120012Method for preparing additive for chemical mechanical polishing slurry composition - Disclosed is a method for preparing an additive solution which can be contained in a chemical mechanical polishing slurry composition used for a semiconductor manufacturing process. The method for preparing an additive solution for a chemical mechanical polishing slurry composition comprises the steps of: preparing an aqueous iron salt solution by admixing an iron salt and cooled water of 5° C. or less; and preparing an oxide containing silicon and iron by admixing and stirring a silicon salt and the aqueous iron salt solution for carrying out a reaction of the silicon salt and the aqueous iron salt solution.05-14-2009
20130081335GRAPHITE COATED METAL NANOPARTICLES FOR POLYCRYSTALLINE DIAMOND COMPACT SYNTHESIS - A method of forming polycrystalline diamond includes forming metal nanoparticles having a carbon coating from an organometallic material; combining a diamond material with the metal nanoparticles having the carbon coating; and processing the diamond material and the metal nanoparticles having the carbon coating to form the polycrystalline diamond. Processing includes catalyzing formation of the polycrystalline diamond by the metal nanoparticles; and forming interparticle bonds that bridge the diamond material by carbon from the carbon coating.04-04-2013
20100043303ABRASIVE COMPACT WITH IMPROVED MACHINABILITY - An abrasive compact may include an ultra-hard phase that may include ultra-hard particles having a Knoop hardness of 5000 KHN or greater, a sinter catalyst, and a reaction phase that may include a catalyst-ceramic compound having a Knoop hardness lower than that of the ultra-hard phase.02-25-2010
20100043304DIAMOND TOOL AND METHOD OF MANUFACTURING THE SAME - Disclosed herein is a diamond tool and a method of manufacturing the same. The diamond tool includes a shank and a segment coupled to the shank having a compact having a plurality of grooves, and diamond particles inserted into the grooves and bonded to the compact. The grooves can be formed on the compact corresponding to a desired arrangement locations of the diamond particles. A metal powder injection molding method can be employed to prepare the compacts. More than one compact can be stacked to form the segment, so that the diamond particles can be arranged in various patterns in the segment, thereby achieving simplification of the process, which allows cost savings and process automation.02-25-2010
20100095602TECHNIQUES AND MATERIALS FOR THE ACCELERATED REMOVAL OF CATALYST MATERIAL FROM DIAMOND BODIES - A method for making a thermally stable cutting element may include forming an acid mixture containing two different acid species by combining an acid solution and at least one acid-forming compound, wherein the at least one acid-forming compound is provided in solid form, and wherein the at least one acid-forming compound produces an acid that is different than the acid solution; treating at least a portion of a sintered diamond body by placing the sintered diamond body in the acid mixture, wherein the sintered diamond body comprises: a matrix phase of bonded-together diamond grains; a plurality of interstitial regions dispersed within the matrix phase; and a metal material disposed within a plurality of the interstitial regions; wherein the treating removes the metal material from at least a portion of the plurality of interstitial regions; and removing the sintered diamond body from the acid mixture after a predetermined length of time, wherein at least a portion of the diamond body removed from the acid mixture is substantially free of the metal material and is a thermally stable diamond body.04-22-2010
20100005728METHOD FOR MAKING COMPOSITE ABRASIVE COMPACTS - The present invention relates to polycrystalline ultra hard material cutting elements, and more particularly to a method of forming a polycrystalline ultra hard material cutting element with a thicker ultra hard layer than cutting elements formed by prior art methods. In an exemplary embodiment, such a method includes pre-sintering the ultra hard material powder to form an ultra hard material layer that is partially or fully densified prior to HPHT sintering, so that the ultra hard layer is pre-shrunk. This pre-sintering in an exemplary embodiment is achieved by means of a spark plasma process, or in another exemplary embodiment by a microwave sintering process.01-14-2010
20090241432ABRASIVE MEANS, USE OF ALKALI METAL FLUOROALUMINATES OR ALKALINE EARTH FLUOROALUMINATES FOR STABILIZING POLYMERS AGAINST CHANGE IN COLOR BY THE ACTION OF HEAT, AND MIXTURE CONSISTING OF POTASSIUM TETRAFLUOROALUMINATE AND DIPOTASSIUM PENTAFLUOROALUMINATE AND OF OTHER ABRASIVE-ACTIVE FILLERS - The invention relates to an abrasive means with abrasive-active fillers. The abrasive means is comprised, in general, of a support, abrasive grit and of a binder system. In order to improve the abrasive action and the serviceable life of the abrasive means, the binding agent system contains synthetic alkali metal fluoroaluminates, and/or alkaline earth metal fluoroaluminates, in particular, alkali metal tetrafluoroaluminate, preferably potassium tetrafluoroaluminate, together with at least one additional abrasive-active filler.10-01-2009
20090307987ABRASIVE COMPACTS - Abrasive compacts, in particular ultrahard polycrystalline abrasive compacts, are made under high pressure/high temperature conditions and are characterized in that they include a coarser grained fraction of ultrahard particles distributed non-percolatively throughout a finer grained fraction of ultrahard particles, which may be regarded as a finer grained ultrahard particle matrix, in such a way that the individual coarser grains are largely isolated from one another. It therefore performs as a matrix of highly wear resistant finer grained material interspersed with larger grains, offering a structure that has advantageous wear and impact performance over the behaviours of the two components individually or otherwise combined.12-17-2009
20130086848Polycrystalline AL2O3 Bodies Based on Melted Aluminum Oxide - The present invention relates to polycrystalline Al04-11-2013
20090094903PROFILING TOOL USING ULTRA-HARD SINTERED BODY AND ELASTIC MATERIAL, AND METHOD OF PRODUCING THE SAME - A profiling tool using an ultra-hard sintered body and an elastic material, and a method of producing the tool is provided. The profiling tool, used for grinding brittle workpieces, is produced by embedding ultra-hard sintered bodies in an elastic material such that the sintered bodies form a specific pattern, thus improving the grinding performance and lengthening the life span of the tool. The profiling tool includes a rotary metal body and a grinding part provided on the outer surface of the metal body. The grinding part is produced by embedding the ultra-hard sintered bodies in the elastic material such that the sintered bodies form a predetermined unit pattern and maintain a predetermined angle relative to the rotating direction of the tool. The metal body has both a shaft hole and a plurality of water outlet holes passing through the metal body outwards in radial directions from the shaft hole.04-16-2009
20130067828Abrasive Grains Based on Zirconia Alumina - Disclosed herein are abrasive grains based on zirconia alumina melted in an electric arc furnace, comprising a content of 52 to 62 wt % Al03-21-2013
20130061535ABRASIVE ARTICLE AND METHOD OF FORMING - An abrasive article having a substrate, a tacking film overlying the substrate, abrasive particles comprising a coating layer bonded to the tacking film such that a bond between the coating layer and the tacking film defines a metallic bonding region, and a bonding layer overlying the abrasive particles and the tacking film,03-14-2013
20130061534METHOD OF SOLID PCBN SYTHESIS - The invention generally relates to a sintered CBN composite compact having a non-CBN portion. The compact includes about 86 to about 90% CBN and the non CBN portion contains borides and nitrides of Al. The compact is for use as a cutting tool insert in continuous machining of gray cast iron. The sintered compact has a thermal conductivity of 1.25-4 W/cm/° K. in the temperature range of about 200° C. to about 600° C. and sonic velocity of at least about 14.5 Km/sec at room temperature.03-14-2013
20100005729PULSED ELECTRICAL FIELD ASSISTED OR SPARK PLASMA SINTERED POLYCRYSTALLINE ULTRA HARD MATERIAL AND THERMALLY STABLE ULTRA HARD MATERIAL CUTTING ELEMENTS AND COMPACTS AND METHODS OF FORMING THE SAME - The present invention relates to ultra-hard cutting elements, and in particular cutting elements or compacts formed by a pulsed electrical field assisted HPHT sintering process or a spark plasma HPHT sintering process. In an embodiment, a method of forming a polycrystalline ultra-hard material includes providing a mixture of ultra-hard particles, placing the mixture of ultra-hard particles into an enclosure, placing the enclosure into a press cell assembly having a heater, applying a repeated high-energy pulse of direct current to the heater to heat the ultra-hard particles, and pressing the enclosure at sufficient pressure to form a polycrystalline ultra-hard material.01-14-2010
20100011673Method and apparatus for selectively leaching portions of PDC cutters through templates formed in mechanical shields placed over the cutters - A polycrystalline diamond compact (PDC) cutter having a body of diamond crystals containing cobalt is coated with Teflon which is impervious to hydrofluoric acid. After the Teflon coating is dried, a segment of the Teflon coating is removed and a mixture of 50% hydrofluoric acid and 50% nitric acid is supplied to the diamond crystal body through the template in the Teflon coating to leach out the cobalt catalyzing material contained within the body of diamond crystals. In an alternative embodiment, a similar process is used to coat a PDC drill bit and the PDC cutters mounted in the PDC drill bit. After the Teflon dries, a segment of the coating is removed and the acid mix is applied through the templates in the cutters to leach out the cobalt in each of the bodies of diamond crystals. In another alternative embodiment, a tube is placed over the PDC cutter, the tube having one or more templates exposing only the segment or segments of the cutting surface to the acid mix.01-21-2010
20090013609Polymeric Microgels for Chemical Mechanical Planarization (CMP) Processing - Organic-inorganic composites were prepared as colloidal particles of a cross-linked, thermally responsive polymer. Hybrid PNIPAM-polysiloxane particles and composite polymeric particles with embedded nanoparticles of an inorganic metal-oxide (MO01-15-2009
20120233930GRINDING WHEEL TRUING TOOL AND MANUFACTURING METHOD THEREOF, AND TRUING APPARATUS, METHOD FOR MANUFACTURING GRINDING WHEEL AND WAFER EDGE GRINDING APPARATUS USING THE SAME - The present invention relates to a grinding wheel truing tool, its manufacturing method, and a truing apparatus, a method for manufacturing a grinding wheel and a wafer edge grinding apparatus using the same. The grinding wheel truing tool of the present invention compensates a groove of a fine-grinding wheel for fine-grinding a wafer edge, and includes a truer having an edge of the same angle as a slanted surface of the groove of the fine-grinding wheel and a cross-sectional shape corresponding to a cross-sectional shape of the groove. The present invention uses the truing tool to easily process the groove of the grinding wheel for fine-grinding the wafer edge.09-20-2012
20090300992MATERIAL BASED ON SIALONS - Sialon materials suited for machining metal materials, having HFO12-10-2009
20110283629High Strength Diamond-SiC Compacts and Method of Making Same - The present disclosure provides a silicon carbide (SiC) bonded diamond compact having less than about 2 weight % unreacted Si and less than about 1 weight % graphite, as well as processes for making the same.11-24-2011
20120186162DIAMOND TOOL AND METHOD OF MAKING THIS TOOL - The invention relates to a diamond tool comprising a tool body (07-26-2012
20090260299Tungsten rhenium compounds and composites and methods for forming the same - The present invention relates to tungsten rhenium compounds and composites and to methods of forming the same. Tungsten and rhenium powders are mixed together and sintered at high temperature and high pressure to form a unique compound. An ultra hard material may also be added. The tungsten, rhenium, and ultra hard material are mixed together and then sintered at high temperature and high pressure.10-22-2009
20080302023Cubic Boron Nitride Compact - A polycrystalline cubic boron nitride compact which comprises greater than 75 volume % and not greater than 90 volume % cubic boron nitride particles, the cubic boron nitride particles comprising particles of at least two average particle sizes, and a binder phase constituting the balance of the compact and comprising at least one titanium compound selected from titanium boride, titanium nitride, titanium carbide and titanium carbonitride and at least one aluminium compound selected from aluminium oxide, aluminium boride, aluminium nitride, aluminium carbide and aluminium carbonitride.12-11-2008
20090077900Abrasive products including active fillers - An abrasive product comprises an abrasive component and a bond component. In one embodiment, the bond component includes a binder and a filler component that includes a cryolite and at least one member selected from the group consisting of sodium oxalate (Na03-26-2009
20080307712Ceria Based Glass Polishing Composition and a Process For the Manufacture Thereof - The invention is directed to a process for the manufacture of a ceria based polishing composition, comprising (a) suspending an inorganic cerium salt or cerium hydroxide with a cerium content calculated as cerium oxide in the range of 50%-100% based on Total rare earth oxide (TREO) in an aqueous medium thereby obtaining an aqueous suspension, (b) treating said aqueous suspension with an acid or a salt of an acid selected from the group of HF, H12-18-2008
20120023833High Impact Resistant Tool - In one aspect of the present invention, a high impact resistant tool comprises a sintered polycrystalline diamond body bonded to a cemented metal carbide substrate at an interface, the body comprising a substantially pointed geometry with an apex, the apex comprising a curved surface that joins a leading side and a trailing side of the body at a first and second transitions respectively, an apex width between the first and second transitions is less than a third of a width of the substrate, and the body also comprises a body thickness from the apex to the interface greater than a third of the width of the substrate.02-02-2012
20120110921GESINTERTE SCHLEIFKORNAGGLOMERATE SINTERED ABRASIVE GRIT AGGLOMERATES - The present invention relates to sintered abrasive grit agglomerates based on aluminum oxide, having homogeneously distributed nanoscale pores in the range of 100-300 nm, with a pore volume of at least 15%. The average diameter of primary particles of the aluminum oxide primary particles is less than 5 μm, wherein said primary particles are connected to each other without additional adhesive agent.05-10-2012
20110167734Thermally Conductive Sand Mould Shell for Manufacturing a Matrix Bit - A thermally conductive sand shell moulding system allows for controlling heat flow in a molten metal infiltrate powdered metal drill bit moulding system to differentially cool the mould system to control differential shrinking and accompanying stress concentrations.07-14-2011
20100088969DIAMOND SINTER - A diamond sinter which has higher hardness than conventional diamond sinters and is excellent in strength including chipping resistance and wearing resistance. The diamond sinter comprises diamond particles and a binder and is characterized in that the binder comprises: a solid solution comprising carbon, tungsten, and at least one element selected from the group consisting of titanium, zirconium, vanadium, niobium, and chromium; and an iron-group element represented by cobalt. It is further characterized in that adjacent diamond particles are bonded to each other.04-15-2010
20090165396Method of Producing Oxide Particles, Slurry, Polishing Slurry, and Mehod of Polishing Substrate - The present invention provides a method of producing oxide particles, comprising a step of mixing a metal carbonate with an acid to give a mixture, a step of heating the mixture to give a metal oxide and a step of pulverizing the metal oxide, and slurry wherein metal oxide particles obtained by the above method of producing are dispersed in an aqueous medium, a polishing slurry, and a method of polishing a substrate.07-02-2009
20110197517METHOD FOR APPLYING A POWDERED-DIAMOND COATING TO THE SURFACE OF CUTTERS FOR DENTISTRY EXCLUDING SLOT SURFACES - The surface of cutters for dentistry is rendered passive to electroplating by immersion in a concentrated aqueous solution of nitric acid for a certain period of time. This is followed by painting a length including the surface marked out by the slots, the surface inside the slots and the surface at the tip, using an electrically insulating paint resistant to acids. Each cutter is then ground using a grinding wheel with rotating disk having an abrasive edge shaped like the continuous profile of the painted surface. Grinding removes the paint together with a micrometric layer of metal from the surface except for that inside the slots. The shank is ground and painted for a length adjacent to the slots. Further processes are then carried out in the following order: activation of the exposed metal surface by electrolysis of reversed polarity in a Wood bath; initial electrolytic nickel-plating in a Wood bath; application of a powdered diamond coating in a Watts bath by a second process of electrolytic nickel-plating containing powdered diamond in contact with the cutters; stabilization of the diamond coating by a third process of electrolytic nickel-plating in a Watts bath containing no powdered diamond; removal of the residual insulating paint by immersing the cutters coated with powdered diamond in a non-halogenous solvent treated with ultrasounds.08-18-2011
20110203187Boron Suboxide Composite Material - A boron suboxide composite material having improved fracture toughness consists of particulate or granular boron suboxide distributed in a binder phase, such as Al08-25-2011
20080271384CONDITIONING TOOLS AND TECHNIQUES FOR CHEMICAL MECHANICAL PLANARIZATION - Tools for conditioning chemical mechanical planarization (CMP) pads comprise a substrate with abrasive particles coupled to at least one surface. The tools can have various particle and bond configurations. For instance, abrasive particles may be bonded (e.g., brazed or other metal bond technique) to one side, or to front and back sides. Alternatively, abrasive particles are bonded to a front side, and filler particles coupled to a back side. The abrasive particles can form a pattern (e.g., hexagonal) and have particle sizes that are sufficiently small to penetrate pores of a CMP pad during conditioning, leading to fewer defects on wafers polished with the conditioned CMP pad. Grain bonding can be accomplished using brazing films, although other metal bonds may be used as well. Also, balanced bond material (e.g., braze on both sides) allows for low out-of-flatness value.11-06-2008
20110203188ABRASIVE MOLTEN GRAINS - The invention relates to molten grains having the following chemical composition in wt % in terms of oxides: Al08-25-2011
20130212952Laser Method for Making Shaped Ceramic Abrasive Particles, Shaped Ceramic Abrasive Particles, and Abrasive Articles - A method of making shaped ceramic abrasive particles includes cutting a layer of ceramic precursor material using a laser beam and forming shaped ceramic precursor particles. Further thermal processing provides shaped ceramic abrasive particles. Shaped ceramic abrasive particles producible by the methods and abrasive articles containing them are also disclosed.08-22-2013
20130212953ALUMINA LAYER WITH MULTITEXTURE COMPONENTS - A cutting tool insert for machining by chip removal includes a body of a hard alloy of cemented carbide, cermet, ceramics or cubic boron nitride based material onto which a hard and wear resistant coating is deposited by CVD. The coating includes at least one multitextured α-Al08-22-2013
20090019782ABRASIVE TOOL HAVING SPRAY-FORMED BRAZING FILLER LAYER AND MANUFACTURING PROCESS THEREOF - An abrasive tool having a spray-formed brazing filler layer and a manufacturing process thereof are described, in which drawing and adhering steps performed on a conventional brazing filler layer are simplified through spraying. A solvent, an adhesive, and a powder are sequentially mixed to form a brazing filler slurry; next, the brazing filler is sprayed on a substrate, so as to form a brazing filler layer with an appropriate thickness; and then, abrasive particles are adhered to the brazing filler layer, and then the abrasive particles are combined with the substrate through the brazing filler layer by brazing. The conventional drawing and adhering steps are omitted through spraying, and it is applicable for substrates with complicated shapes.01-22-2009
20090188171POLYMETAL POWDER AND SINTERED COMPONENT PRODUCED BASED ON THIS POWDER - A multi-metal powder, in particular for producing diamond tools comprises iron copper, cobalt and molybdenum whose contents are expressed in the following mass percentages: Fe+Cu+Co+Mo=98 mass %, the rest being oxygen and production impurities, wherein 15%=Cu=35%, 0.03=Mo/(Co+Fe+Mo)=0.10, —Fe/Co=2. A sintered compact is obtained by hot compaction of said multi-metal powder, for example, in the form of a diamond cutting tool.07-30-2009
20090139150Method of Making a Modified Abrasive Compact - A method of treating the working surface of an abrasive compact having a working surface. The working surface, or a region adjacent the working surface, of the abrasive compact is contacted with a halogen gas or a gaseous environment containing a source of halide ions, preferably at a temperature at or below 800° C., in order to remove catalysing material and any foreign metal matrix material from the region adjacent the working surface.06-04-2009
20120137597SHAPED ABRASIVE PARTICLES WITH A SLOPING SIDEWALL - Abrasive particles comprising shaped abrasive particles each having a sloping sidewall, each of the shaped abrasive particles comprising alpha alumina and having a first face and a second face separated by a thickness, t. The shaped abrasive particles further comprising a draft angle α between the second face and the sloping sidewall, and the draft angle α is between about 95 degrees to about 125 degrees.06-07-2012
20120137596METAL BONDED GRINDING STONE, AND METHOD OF MANUFACTURING THE SAME - A metal bonded grinding stone is manufactured by heating and pressurizing a material including abrasive grains, a cobalt, a tungsten disulfide and a copper tin alloy to obtain a sintered product, and rapid-cooling the sintered product.06-07-2012
20090199488CERIA MATERIAL AND METHOD OF FORMING SAME - A particulate material comprising cerium oxide particles having a secondary particle size distribution in a range of 80 nm to 199 nm and a density of at least 6.6 g/cm08-13-2009
20120066982BONDED ABRASIVE ARTICLES, METHOD OF FORMING SUCH ARTICLES, AND GRINDING PERFORMANCE OF SUCH ARTICLES - An abrasive tool having a bonded abrasive body including abrasive grains contained within a bond material comprising a metal. During a grinding operation, the bonded abrasive body has a power variance [(Po−Pn)/Po]×100% of not greater than about 40%, wherein Po represents the grinding power to grind a workpiece with the bonded abrasive body at an initial grinding cycle and Pn represents the grinding power to grind the workpiece for a nth grinding cycle, wherein n>4.03-22-2012
20110219704METHOD FOR RECYCLING CERIUM OXIDE ABRASIVE - Disclosed is a method for recycling a cerium oxide abrasive. The method may include adding a strong alkali solution to a slurry waste of the cerium oxide abrasive, adding sodium fluoride to the slurry waste, and separating a cerium oxide particle included in the slurry waste from other kinds of particles.09-15-2011
20090100766Coated abrasive grains, method and for the production thereof as well as the use thereof for producing abrasives - The present invention relates to abrasive grains, which are coated with a micro-particle inorganic powder and a binder, consisting of the group of conventional abrasive grains as well as the group of the “superabrasives”, wherein the binder comprises an aluminosilicate with a molar ratio of Al04-23-2009
20110138694Cubic Boron Nitride Compact - A structure with a higher surface area than the area occupied by the structure has a number of pillars (06-16-2011
20110138695METHODS FOR APPLYING ABRASIVE WEAR RESISTANT MATERIALS TO A SURFACE OF A DRILL BIT - Methods for applying an abrasive wear-resistant material to a surface of a drill bit include providing a drill bit having a bit body formed of a material comprising one of steel material, particle-matrix composite material and cemented matrix material, mixing a plurality of −40/+80 ASTM mesh dense sintered carbide pellets in a matrix material, heating the matrix material to a temperature above the melting point of the matrix material, applying the molten matrix material and at least some of the dense sintered carbide pellets to at least a portion of an exterior surface of the bit body; and solidifying the molten matrix material.06-16-2011
20120192501CUTTING ELEMENTS HAVING DIFFERENT INTERSTITIAL MATERIALS IN MULTI-LAYER DIAMOND TABLES, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS, AND METHODS OF FORMING SAME - Methods of forming cutting elements for earth-boring tools include providing a barrier material between a first powder and a second powder each comprising diamond grains, and subjecting the powders and barrier material to high temperature and high pressure conditions to form polycrystalline diamond material. The formation of the polycrystalline diamond material is catalyzed, and catalytic material may be hindered from migrating across the layer of barrier material. Cutting elements for use in earth-boring tools include a barrier material disposed between a first layer of polycrystalline diamond material and a second layer of polycrystalline diamond material. Earth-boring tools include one or more such cutting elements for cutting an earth formation.08-02-2012
20100146867SHAPED ABRASIVE PARTICLES WITH GROOVES - Abrasive particles comprising shaped abrasive particles each having a sidewall, each of the shaped abrasive particles comprising alpha alumina and having a first face and a second face separated by a sidewall and having a maximum thickness, T; and the shaped abrasive particles further comprising a plurality of grooves on the second face.06-17-2010
20100192476WEAR-RESISTANT MATERIAL - A wear-resistant material which comprises certain concentrations of carbon, nitrogen, oxygen, niobium/tantalum as well as other metallic elements. The material comprises a metal matrix and hard phases embedded therein. The hard phases comprise one or more of carbides, nitrides, carbonitrides, and oxide carbonitrides and have a diameter of from about 0.2 μm to about 50 μm. This abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.08-05-2010
20100186303Polycrystalline Diamond Abrasive Element and Method of its Production - Polycrystalline diamond abrasive elements made by incorporating low levels of at least one metal boride, the metal being selected from magnesium, calcium, aluminium, strontium, yttrium, zirconium, hafnium and chromium, and the rare earth metals, particularly cerium and lanthanum. The benefits of adding boron to polycrystalline diamond abrasive compacts are exploited together with simultaneously minimising or eliminating the detrimental effects of the presence of oxygen.07-29-2010
20100186304Fine Grained Polycrystalline Abrasive Material - Polycrystalline diamond abrasive elements having a fine grained microstructure are produced from fine grained diamond particles and a catalyst solvent material, at least a portion of which is in the form of nanosized particles. The abrasive elements exhibit high homogeneity and exhibit significant increases in toughness and improved wear resistance.07-29-2010
20100037532Cutting Tool - A cutting tool including a fine and uniform alumina-based substrate is disclosed herein. In an exemplary embodiment, the alumina-based substrate includes 0.1 to 25% by volume of one or more metal oxides, or 5 to 80% by volume of metal carbonitride and 0.01 to 10% by volume of one or more metal oxides. Metal constituting the metal oxide and the metal carbonitride is selected from the group consisting of elements from Groups III to VI (including La group and Ac group) of the periodic table, Mg and Co. The metal oxides added to alumina reside at the boundaries of alumina grains, thereby prohibiting the alumina grains from growing excessively during a sintering process.02-18-2010
20090288348METHOD OF MAKING A COMPOSITE DIAMOND BODY - The present invention relates to a method of producing a composite diamond body from powders of diamond particles and powders forming a binder phase comprising cobalt powder having mainly a fcc-structure and a grain size (FSSS) of from about 0.2 to about 2.9 μm., with a pressing and sintering operation. The present invention also relates to a composite diamond body made according to the method.11-26-2009
20090113811ABRASIVE WEAR-RESISTANT MATERIALS, METHODS FOR APPLYING SUCH MATERIALS TO EARTH-BORING TOOLS, AND METHODS FOR SECURING CUTTING ELEMENTS TO EARTH-BORING TOOLS - An abrasive wear-resistant material includes a matrix and sintered and cast tungsten carbide pellets. A device for use in drilling subterranean formations includes a first structure secured to a second structure with bonding material. An abrasive wear-resistant material covers the bonding material. The first structure may include a drill bit body and the second structure may include a cutting element. A method for applying an abrasive wear-resistant material to a drill bit includes providing a bit, mixing sintered and cast tungsten carbide pellets in a matrix material to provide a pre-application material, heating the pre-application material to melt the matrix material, applying the pre-application material to the bit, and solidifying the material. A method for securing a cutting element to a bit body includes providing an abrasive wear-resistant material to a surface of a drill bit that covers a brazing alloy disposed between the cutting element and the bit body.05-07-2009
20090113809FINE PARTICLES OF OXIDE CRYSTAL AND SLURRY FOR POLISHING WHICH CONTAINS THE FINE PARTICLES - To provide a slurry for polishing which is excellent in polishing properties, can suppress scratches and is appropriate for accurate polishing in semiconductor production steps, and fine particles of oxide crystal for it.05-07-2009
20090113810Method for Making Cemented Carbide Products - Methods are disclosed for dispersing a powder mixture of at least one metal carbide powder and at least one cobalt powder in at least one apolar medium with at least one dispersant and, optionally, at least one wetting agent. According to the invention, the dispersant is an effective dispersant for both cobalt and metal carbide surfaces. The invention is particularly useful for powder mixtures with a fine grained cobalt powder and a relatively high cobalt content. The dispersant used is an amphiphilic compound with a branched copolymer structure.05-07-2009
20080289262Method and Equipment for Making Abrasive Particles in Even Distribution, Array Pattern and Preferred Orientation - An equipment for making abrasive particles in even distribution, array pattern and preferred orientation comprises an adsorbing releasing apparatus being composed of a plurality of acicular soft magnetic metallic sticks, an upper and a lower stators, and a plurality of windings. Each winding forms an electric circuit through a electrical source, a resistance, and a switch a plurality of blind holes being distributed on face of the blind hole feeding tropism board. Using electric current to form magnetic field for the acicular soft magnetic metallic sticks absorb or release abrasive particles plated with soft magnetic materials. The equipment is simple, convenient in operation, high in efficiency and reliability. The equipment makes abrasive particles in matrix with an ideal state in distributing density, uniformity, arrange, and tropism. Thereby, the function of the abrasive materials is fully exerted and the life of products is prolonged.11-27-2008
20110107680METHOD FOR PREPARING CERIUM CARBONATE - The present invention relates to a method for preparing cerium carbonate which enables preparation of hexagonal cerium carbonate by a simplified process, a cerium carbonate powder prepared thereby, and a method for preparing a cerium oxide powder using the same.05-12-2011
20100313489cBN SINTERED BODY AND TOOL MADE OF cBN SINTERED BODY - A cBN sintered body excellent in chipping resistance and wear resistance in working difficult-to-machine centrifugally cast iron is provided. The present invention is directed to a cBN sintered body composed of a cBN component not lower than 50 volume % and not higher than 90 volume % or not lower than 40 volume % and not higher than 85 volume %, characterized in that the cBN sintered body contains alumina and zirconia not lower than 9 volume % and not higher than 50 volume % and a weight ratio of zirconia/alumina is not lower than 0.1 and not higher than 4. A tool including the cBN sintered body according to the present invention in a portion involved with cutting achieves improved performance in working difficult-to-machine centrifugally cast iron as compared with a conventional tool made of a cBN sintered body, because the cBN sintered body is excellent in strength, hardness and toughness.12-16-2010
20100180514High-Performance Hardmetal Materials - Hardmetal compositions each including hard particles having a first material and a binder matrix having a second, different material comprising rhenium or a Ni-based superalloy. Tungsten may also be used a binder matrix material. A two-step sintering process may be used to fabricate such hardmetals at relatively low sintering temperatures in the solid-state phase to produce substantially fully-densified hardmetals. A hardmetal coating or structure may be formed on a surface by using a thermal spray method.07-22-2010
20100132266CUBIC BORON NITRIDE COMPACTS - The invention is for a cubic nitride compact comprising a polycrystalline mass of cubic boron nitride particles, present in an amount of at least 70 percent by volume and a binder phase, which is metallic in character. The invention extends to a compact in which the binder phase is preferably superalloy in character.06-03-2010
20110239545COMPOSITIONS FOR MANUFACTURING DOWNHOLE TOOLS AND DOWNHOLE TOOL PARTS - Methods, systems and compositions for manufacturing downhole tools and downhole tool parts for drilling subterranean material are disclosed. A model having an external peripheral shape of a downhole tool or tool part is fabricated. Mold material is applied to the external periphery of the model. The mold material is permitted to harden to form a mold about the model. The model is eliminated and a composite matrix material is cast within the mold to form a finished downhole tool or tool part.10-06-2011
20090313908METHODS OF FORMING THERMALLY STABLE POLYCRYSTALLINE DIAMOND CUTTERS - A method for forming a thermally stable cutting element that includes forming at least one acid infusion pathway in a polycrystalline abrasive body containing a catalyzing material to be leached; and contacting at least a portion of the at least one acid infusion pathway in the polycrystalline abrasive body with a leaching agent is disclosed.12-24-2009
20110067315METHOD FOR PREPARING CERIUM CARBONATE, METHOD FOR CERIUM OXIDE PREPARED AND CRYSTALLINE CERIUM OXIDE - The present invention relates to a method for preparing cerium carbonate-based compound, which is capable of easily controlling the crystalline structure, size, shape, or etc. of the cerium carbonate-based compound, and of preparing the cerium carbonate-based compound efficiently at low cost.03-24-2011
20110252714CERIA MATERIAL AND METHOD OF FORMING SAME - A particulate material comprising cerium oxide particles having a secondary particle size distribution in a range of 80 nm to 199 nm and a density of at least 6.6 g/cm10-20-2011
20120240479POLISHING SLURRY FOR SILICON CARBIDE AND POLISHING METHOD THEREFOR - The present invention provides an abrasive treatment technique capable of planarizing at an extremely high rate silicon carbide, which is thermally and chemically extremely stable and for which it is extremely difficult to efficiently perform an abrasive treatment. The present invention is a polishing slurry for silicon carbide wherein the polishing slurry includes a suspension liquid in which the pH thereof is 6.5 or more and manganese dioxide particles are suspended. The polishing slurry for silicon carbide is preferably a suspension in which manganese dioxide particles are suspended in an aqueous solution allowed to have a redox potential falling in a range enabling manganese to be present as manganese dioxide. The redox potential V of the polishing slurry preferably falls within the range specified by the following formula representing a relation between V and pH, pH being a variable:09-27-2012
20120240478ABRASIVE MATERIAL - The present invention provides an abrasive material capable of polishing difficult-to-polish silicon carbide at a high degree of surface precision. The present invention relates to an abrasive material including manganese dioxide particles having a non-needle-like shape possessing a ratio of the longitudinal axis to the transverse axis of the particles observed with a scanning electron microscope of 3.0 or less. The abrasive material is preferable if the average particle size D09-27-2012
20120144754DISH-SHAPED ABRASIVE PARTICLES WITH A RECESSED SURFACE - Abrasive particles comprising dish-shaped abrasive particles each having a sidewall; each of the shaped abrasive particles comprising alpha alumina and having a first face and a second face separated by a thickness, t; and wherein either the first face or the second face is recessed or concave.06-14-2012
20120144755SHAPED ABRASIVE PARTICLES WITH AN OPENING - An abrasive comprising shaped abrasive particles each with an opening. The shaped abrasive particles are formed from alpha alumina and have a first face and a second face separated by a thickness t. The opening in each of the shaped abrasive particles can improve grinding performance by reducing the size of a resulting wear flat, can provide a reservoir for grinding aid, and can improve adhesion to a backing in a coated abrasive article.06-14-2012
20090293370Cubic Boron Nitride Compact - A method of making polycrystalline CBN compacts, high in CBN content, is provided. The method includes making a powdered composition by subjecting a mixture of CBN, present in an amount of at least 80 volume percent of the mixture, and a powdered binder phase to attrition milling. This powdered mixture is subjected to conditions of elevated temperature and pressure suitable to produce CBN compacts.12-03-2009
20110271605FINE GRAINED CEMENTED CARBIDE POWDER MIXTURE WITH LOW SINTERING SHRINKAGE AND METHOD OF MAKING THE SAME - A fine grained cemented carbide powder mixture for cutting tool inserts for metal machining includes WC-powder with a Scott density of 2.75-3.75 g/cm11-10-2011
20110258938Aluminum oxide particle and polishing composition containing the same - Aluminum oxide particles are provided that include primary particles each having a hexahedral shape and an aspect ratio of 1 to 5. The aluminum oxide particles preferably have an average primary particle size of 0.01 to 0.6 μm. The aluminum oxide particles preferably have an alpha conversion rate of 5 to 70%. Further, the aluminum oxide particles preferably have an average secondary particle size of 0.01 to 2 μm, and the value obtained by dividing the 90% particle size of the aluminum oxide particles by the 10% particle size of the aluminum oxide particles is preferably 3 or less. The aluminum oxide particles are used, for example, as abrasive grains in the applications of polishing semiconductor device substrates, hard disk substrates, or display substrates.10-27-2011
20100031582Ferrous powder material and a manufacture method thereof, and a briquette for use as steelmaking material - A ferrous powder material which may be compression molded by a compression molding press and may be recycled as a valuable resource is provided. The ferrous powder material contains grinding chips of a ferrous metal. The ferrous powder material is obtained by stirringly mixing a sludge mass with calcined lime and water, the sludge mass comprising the grinding chips of the ferrous metal and a grinding fluid containing oil and water.02-11-2010
20100018127cBN COMPOSITE MATERIAL AND TOOL - The invention provides a tool component comprising a first layer of polycrystalline cBN material which has a rake (working) surface and a flank surface and comprises less than 70 vol% cBN; and a secondary layer across the rake surface or at least partially across the rake surface and comprising a refractory material and optionally a binder phase and optionally cBN, wherein the secondary layer has a higher resistance to crater formation than the first layer of cBN material and has a lower affinity towards iron than cBN.01-28-2010
20120036790Abrasive Material Comprising Reactive Inorganic Endothermic Compound - The invention provides a nonwoven fabric abrasive material, which comprises a reactive inorganic endothermic compound.02-16-2012
20090031637COATED ABRASIVES - This invention relates to coated abrasives, a process for their production, and to coated abrasives for use in abrasive-containing tools.02-05-2009
20100058671CERIUM OXIDE AND METHOD FOR PRODUCING THE SAME - The present invention relates to a cerium oxide and a production method thereof. Especially, it is an object of the present invention to provide a cerium oxide which realizes a high smoothness comparable to that of colloidal silica and has a large polishing rate. Further, the present invention provides a cerium oxide which has good cleaning properties of the polishing surface after polishing. The present invention relates to a cerium oxide having an average particle size of 0.5 μm or less and a crystallite diameter of 8 nm to 80 nm, characterized in that the cerium oxide settles out in 3 mass % aqueous brine to a predetermined sedimentation volume when the cerium oxide is formed as a slurry containing cerium oxide in a concentration of 2 mass %, and the sedimentation volume after leaving the cerium oxide slurry to stand for 24 hours after stirring is 2.5 to 15.0 mL/g.03-11-2010
20120304547SUPERHARD CONSTRUCTION - The present disclosure generally relates to constructions including a body of polycrystalline diamond (PCD) material attached to a substrate.12-06-2012
20120304546Method and Apparatus for Making a Fixed Abrasive Wire - A method and apparatus for making a fixed abrasive grain wire includes, at first, inserting a wire through a sleeve that includes at least one aperture defined therein. Then, both of the wire and the sleeve are located in electroplating or electro-less plating liquid that includes abrasive grains blended therein. Finally, electroplating or electro-less plating is executed to fix some of the abrasive grains to the wire.12-06-2012
20110314746SHAPED, FRACTURED ABRASIVE PARTICLE, ABRASIVE ARTICLE USING SAME AND METHOD OF MAKING - Precursor alpha alumina abrasive particles in a mold are subjected to a drying process that cracks or fractures at least a majority of the precursor abrasive particles into at least two pieces thereby producing abrasive shards having a smaller size than the mold cavity from which they were made. The smaller abrasive shards, once formed, could be reassembled like jigsaw puzzle pieces to reproduce the original cavity shape of the mold from which they were made. The cracking or fracturing of the precursor abrasive particles is believed to occur by ensuring that the surface tension of the abrasive dispersion to the walls of the mold is greater than the internal attractive forces of the abrasive dispersion as the abrasive dispersion is dried within the mold cavity.12-29-2011
20120000138Sintered Cubic Boron Nitride Cutting Tool - A cutting tool having a sintered compact including 30 to 80 vol. % cubic boron nitride and a binder phase, wherein the binder phase includes about 2 to about 6 vol. % ZrN, is disclosed. In more specific examples, the cutting tool has a sintered compact including 30 to 80 vol. % cubic boron nitride, between about 4 vol. % and about 15 vol. % aluminum and/or aluminum compound and/or aluminum alloy and/or combinations thereof, and a binder phase, wherein the binder phase includes TiN and about 3 to about 5 vol. % ZrN, and wherein the cubic boron nitride has a grain size of less than 20 microns. Cutting tools of the disclosed composition display improved performance, particularly at higher operating speeds, e.g., about 200 m/min or greater.01-05-2012
20120000137CRYSTALLINE CERIUM OXIDE AND PREPARATION METHOD OF THE SAME - The present invention relates to crystalline cerium oxide prepared in a simple, economical, and efficient manner, of which crystal structure, shape, and size can be easily adjusted and that exhibits excellent polishing properties, and a preparation method thereof. The crystalline cerium oxide can be prepared as sub-micron crystalline cerium oxide that has a mean volume diameter and a diameter standard deviation within a predetermined range.01-05-2012
20120055100METHOD AND APPARATUS FOR PRODUCING METAL BOND GRIND STONE - A metal bond grind stone producing method in which electric power consumption is reduced is provided. In the metal bond grind stone producing method, a sintered metal bond grind stone is obtained by a sintering process of sintering a metal bond grind stone material that is a mixture of a metal binder powder and abrasive grains. In the sintering process, the metal bond grind stone material containing the metal binder powder is heated with microwaves to obtain the sintered metal bond grind stone. The sintering process may be a pressure sintering process of performing microwave heating while pressurizing the metal bond grind stone material.03-08-2012
20120055099EDM CUTTABLE, HIGH CBN CONTENT SOLID PCBN COMPACT - The present disclosure relates to cubic boron nitride (cBN) cutting elements that have high cBN content and that are cuttable by electric discharge machining (EDM). A cutting element according to an embodiment includes a self-sintered polycrystalline cubic boron nitride (PCBN) compact, having a first phase of cubic boron nitride (cBN) particles and a ceramic binder phase with titanium compounds. The first phase occupies greater than 80% by volume of the self-sintered PCBN compact. The self-sintered PCBN compact has an electrical conductivity sufficient to be cuttable by electrical discharge machining.03-08-2012
20120055097Abrasive Articles and Methods of Forming - A method of forming an abrasive article includes directing a beam of electromagnetic radiation at a starting location on an abrasive preform comprising a bonding layer and abrasive grains within the bonding layer, and increasing the power of the beam of electromagnetic radiation to a scanning power while directed at the starting location. The method further includes changing the position of the beam relative to the abrasive preform from the starting location to a second location on the abrasive preform.03-08-2012
20120055098BONDED ABRASIVE ARTICLE AND METHOD OF FORMING - An abrasive article includes a body having abrasive grains contained within a bond material comprising a metal or metal alloy, wherein the body comprises a ratio of V03-08-2012
20120042576CUBIC BORON NITRIDE COMPACT - A CBN compact which contains CBN and a matrix phase, wherein the CBN grain size volume frequency distribution has a distribution spread expressed as d90-d10 of 1 micron or greater, and the d90 maximum value is 5 micron or less.02-23-2012
20120011779POLYCRYSTALLINE DIAMOND MATERIALS AND RELATED PRODUCTS - Embodiments relate to methods of fabricating PCD materials by subjecting a mixture that exhibits a broad diamond particle size distribution to an HPHT process, PCD materials so-formed, and PDCs including a polycrystalline diamond table comprising such PCD materials. In an embodiment, a PCD material includes a plurality of bonded diamond grains that exhibit a substantially unimodal diamond grain size distribution characterized, at least in part, by a parameter θ that is less than about 1.0.01-19-2012
20090165395CHEMICAL MECHANICAL POLISHING AQUEOUS DISPERSION, CHEMICAL MECHANICAL POLISHING METHOD, AND KIT FOR PREPARING CHEMICAL MECHANICAL POLISHING AQUEOUS DISPERSION - A chemical mechanical polishing aqueous dispersion includes (A) abrasive grains having a pore volume of 0.14 ml/g or more, and (B) a dispersion medium.07-02-2009
20120060426Conditioning Tools and Techniques for Chemical Mechanical Planarization - Tools for conditioning chemical mechanical planarization (CMP) pads comprise a substrate with abrasive particles coupled to at least one surface. The tools can have various particle and bond configurations. For instance, abrasive particles may be bonded (e.g., brazed or other metal bond technique) to one side, or to front and back sides. Alternatively, abrasive particles are bonded to a front side, and filler particles coupled to a back side. The abrasive particles can form a pattern (e.g., hexagonal) and have particle sizes that are sufficiently small to penetrate pores of a CMP pad during conditioning, leading to fewer defects on wafers polished with the conditioned CMP pad. Grain bonding can be accomplished using brazing films, although other metal bonds may be used as well. Also, balanced bond material (e.g., braze on both sides) allows for low out-of-flatness value.03-15-2012
20120151848Toughness of Polycrystalline Diamond by Incorporation of Bulk Metal Foils - A cutting element include a substrate and a diamond compact including at least two polycrystalline diamond portions separated by at least one metal carbide foil portion. The cutting element is made by placing diamond powder in a reaction container, placing a thin metal layer in the reaction container above or around the diamond powder and binder, placing additional diamond powder in the reaction container above or around the thin metal layer, and placing a pre-sintered substrate containing binder into the reaction container above all diamond powder and thin metal layer components. The assembled reaction container is put into a reactor and is subjected to a high-temperature high-pressure sintering process. The binder in the pre-sintered substrate sweeps through to sinter the first diamond portion, and then reacts with the thin metal layer to form a metal carbide, and then the binder continues to sweep through to sinter the second diamond portion.06-21-2012
20100115855Thermally Stable Diamond Bonded Materials and Compacts - Thermally stable diamond bonded materials and compacts include a diamond body having a thermally stable region and a PCD region, and a substrate integrally joined to the body. The thermally stable region has a microstructure comprising a plurality of diamond grains bonded together by a reaction with a reactant material. The PCD region extends from the thermally stable region and has a microstructure of bonded together diamond grains and a metal solvent catalyst disposed interstitially between the bonded diamond grains. The compact is formed by subjecting the diamond grains, reactant material, and metal solvent catalyst to a first temperature and pressure condition to form the thermally stable region, and then to a second higher temperature condition to both form the PCD region and bond the body to a desired substrate.05-13-2010
20110088330Abrasive Tool - Abrasive material such as diamonds are transported onto a ferromagnetic tool blank from a suspension of brazing flux and diamonds coated with ferromagnetic material. The tool blank is prepared by coating a receptor site with brazing alloy. A magnetic field is applied to the tool blank, and the coated receptor site is placed in contact with the suspension. The receptor site is heated to brazing temperatures to liquefy the coating, allowing diamonds from the suspension to be transported by magnetism to load the liquefied brazing alloy, forming a matrix at the receptor site.04-21-2011
20120247029THERMALLY STABLE DIAMOND POLYCRYSTALLINE DIAMOND CONSTRUCTIONS - Thermally stable diamond constructions comprise a diamond body having a plurality of bonded diamond crystals and a plurality of interstitial regions disposed among the crystals. A metallic substrate is attached to the diamond body. A working surface is positioned along an outside portion of the diamond body, and the diamond body comprises a first region that is substantially free of a catalyst material, and a second region that includes the catalyst material. The diamond body first region extends from the working surface to depth of at least about 0.02 mm to a depth of less than about 0.09 mm. The diamond body includes diamond crystals having an average diamond grain size of greater than about 0.02 mm, and comprises at least 85 percent by volume diamond based on the total volume of the diamond body.10-04-2012
20120167482ABRASIVE ARTICLE AND METHOD OF FORMING - An abrasive article having a substrate, a tacking film overlying the substrate, abrasive particles comprising a coating layer bonded to the tacking film such that a bond between the coating layer and the tacking film defines a metallic bonding region, and a bonding layer overlying the abrasive particles and the tacking film,07-05-2012
20100050536MATERIAL CONTAINING DIAMOND AND AN INTERMETALLIC COMPOUND - THIS INVENTION relates to a method of making a diamond containing material comprising diamond particles and a second phase containing an intermetallic compound comprising the steps of providing a reaction mass of reactants capable, on reaction, of producing carbon and an intermetallic compound and subjecting the reaction mass to diamond synthesis conditions. In an embodiment of the invention, the diamond containing material produced is polycrystalline diamond (PCD) and the reaction mass contains diamond particles in an amount sufficient to allow PCD to be produced. In a further embodiment of the invention, the diamond content in the diamond containing material produced does not exceed 70 volume %.03-04-2010
20100192475METHOD OF MAKING AN EARTH-BORING METAL MATRIX ROTARY DRILL BIT - A method of making an earth-boring rotary drill bit includes providing a plurality of hard particles in a mold to define a particle precursor of the first region and the second region and infiltrating the particle precursor of the first region with a molten first matrix material forming a molten first particle-matrix mixture. The method also includes infiltrating the particle precursor of the second region with a molten second matrix material forming a molten second particle-matrix mixture; and cooling the molten first particle-matrix mixture and the molten second particle-matrix mixture to solidify the first matrix material and the second matrix material and form a bit body having a first particle-matrix composite material having a first material composition in the first region and a second particle-matrix composite material having a second material composition in the second region, wherein the first particle-matrix composite material and the second particle-matrix composite material are different.08-05-2010
20120227333DUAL TAPERED SHAPED ABRASIVE PARTICLES - Shaped abrasive particles comprising alpha alumina and having a first side, a second side, a maximum length along a longitudinal axis and a maximum width transverse to the longitudinal axis. The first side comprising a quadrilateral having four edges and four vertices with the quadrilateral selected from the group consisting of a rhombus, a rhomboid, a kite, or a superellipse. The shaped abrasive particles having an aspect ratio of the maximum length divided by the maximum width of 1.3 or greater.09-13-2012
20120260582Brazed Diamond Tools and Methods for Making the Same - Superabrasive tools and methods for the making thereof are disclosed and described. In one aspect, superabrasive particles are chemically bonded to a matrix support material according to a predetermined pattern by a braze alloy. The brazing alloy may be provided as a powder, thin sheet, or sheet of amorphous alloy. A template having a plurality of apertures arranged in a predetermined pattern may be used to place the superabrasive particles on a given substrate or matrix support material.10-18-2012
20120260581USE OF RESONANT MIXING TO PRODUCE IMPREGNATED BITS - In one example, a method for producing a cutting device matrix includes mixing a plurality of constituent matrix materials using a resonant acoustic mixing process until the constituent matrix materials are substantially homogeneously distributed throughout the matrix.10-18-2012
20110209414SINTERED COMPACT - A sintered cubic boron nitride (cBN) compact for use in a tool is obtained by sintering a mixture of (i) cubic boron nitride, (ii) aluminum oxide, (iii) one or more refractory metal compounds, and (iv) aluminum and/or one or more non-oxide aluminum compounds. The sintered bodies may have sufficient strength and toughness to be used as a tool material in solid, i.e. not carbide supported, form, and may be useful in heavy machining of cast irons.09-01-2011
20110225897LIQUID SUSPENSIONS AND POWDERS OF CERIUM OXIDE PARTICLES AND PREPARATION AND POLISHING APPLICATIONS THEREOF - Suspensions of cerium oxide particles, well suited for polishing applications, the particles (secondary particles) of which have an average size of at most 200 nm, these secondary particles are formed from primary particles whose average size measured by TEM is at most 150 nm with a standard deviation of at most 30% of the value of this average size, and for which the ratio of the average size measured by TEM to the average size measured by BET is at least 1.5. Such suspensions are prepared from solutions of a cerium III salt, comprising a colloidal dispersion of cerium IV, which are contacted, in the presence of nitrate ions and under an inert atmosphere, with a base, and the medium obtained is subjected to a thermal treatment under an inert atmosphere and then acidified and washed.09-22-2011
20120324801THERMALLY STABLE POLYCRYSTALLINE DIAMOND - The present disclosure provides compositions and methods directed to polycrystalline diamond materials. In one embodiment, a polycrystalline diamond material can comprise sintered polycrystalline diamond and a binder alloy, where the binder alloy is a liquid at a sintering temperature of the polycrystalline diamond, forms an intermetallic compound at a low temperature below the sintering temperature, and is substantially all intermetallic phase.12-27-2012
20120090247Coated Cubic Boron Nitride Sintered Body Tool - A cubic boron nitride sintered substrate has a coating with lower and upper layers. The upper layer has an average layer thickness of 0.5 to 3.0 μm and is formed from a compound of a compositional formula Mα, where M represents one or more of Ti, V, Zr, Nb, Mo, Al, Si, and α is one or more of C, N, B and O. The lower layer has an average thickness of 0.5 to 3.0 μm and has alternated first and second thin layers. The first thin layer is formed from a compound with compositional formula (Ti04-19-2012
20120285101HIGH ENERGY TREATMENT OF CUTTER SUBSTRATES HAVING A WEAR RESISTANT LAYER - A high-energy treated cutter comprising a substrate having a top surface, an outer region, and an inner core and a wear resistant layer coupled to the top surface. The high-energy treatment alters the substrate's physical properties so that the inner core provides greater toughness and the outer region provides greater hardness, and greater abrasion resistance. The layer is protected prior to commencement of the treatment. In one embodiment, a cover is positioned to surround the layer and then the cutter undergoes treatment, wherein the cutter is subjected to impact forces with other cutters. In another embodiment, the cutter is positioned within a recess formed in a tray table, thereby providing protection to the layer. The cutter is secured in place via vacuum, glue, or weight. A spray nozzle applies shot material directed to the substrate of the cutter, thereby applying the impact forces to alter the substrate's properties.11-15-2012
20130014446CERIUM SALT, PRODUCING METHOD THEREOF, SERIUM OXIDE AND CERIUM BASED POLISHING SLURRY - A cerium salt wherein, when 20 g of the cerium salt is dissolved in a mixed liquid of 12.5 g of 6N nitric acid and 12.5 g of a 30% hydrogen peroxide aqueous solution, a concentration of an insoluble component present in the solution is 5 ppm or less by mass ratio to the cerium salt before dissolution and cerium oxide produced by processing the cerium salt at high temperatures. Scratch on a surface to be polished can be reduced when a cerium based polishing slurry containing the cerium oxide particles is used, since an amount of impurities in cerium oxide particles and cerium salt particles, raw material thereof, is reduced for high purification.01-17-2013
20080250725Pulpstone for Long Fiber Pulp Production - Pulp production techniques are disclosed. In one embodiment, pulpstone segments are provided, that include proppant grits in the place of some or all of the conventional abrasive typically used in pulpstone applications. The proppant or proppant-abrasive mixture can be combined into a three-dimensional matrix supported by a vitrified bond. Alternative embodiments use proppant grits in an organic bond or a metal bond or a cement bond (each of which may also include abrasive grits in addition to proppant grits). The proportion of proppant grits to abrasive grits can be varied to produce pulp of varying fiber length distribution as required by the end-user (e.g., paper mill). The greater the proppant concentration, the less cutting of the fibers by the conventional abrasive will occur, producing a greater percentage content of longer fibers. Such pulp produces higher quality paper.10-16-2008
20100064595POLYCRYSTALLINE DIAMOND ABRASIVE COMPACTS - The invention is for a polycrystalline diamond abrasive compact comprising a layer of polycrystalline diamond bonded to a cemented tungsten carbide substrate. The polycrystalline diamond defines a plurality of interstices and a binder phase is distributed in the interstices to form binder pools. The polycrystalline diamond is characterised by the presence of a separate tungsten particulate phase in the binder phase, in excess of 0.05 volume % but not greater than 2 volume %, expressed as a % of the total polycrystalline diamond, and the binder phase further containing a low eta-phase, Co3W3C, content as determined by conventional XRD analysis, an XRD peak height of the <511 > eta-phase (Co3W3C) peak which is less than 0.06 when expressed as a fraction of the peak height of the <200> cubic cobalt peak. The invention extends to a composition and to a method for manufacturing the polycrystalline diamond abrasive compact.03-18-2010
20130167449CUTTER ASSEMBLY WITH AT LEAST ONE ISLAND AND A METHOD OF MANUFACTURING A CUTTER ASSEMBLY - A cutter assembly includes a substrate and at least one island. The substrate includes a surface circumscribed by a peripheral edge, a flank surface extending from the peripheral edge, and at least one pocket with an opening on the surface and spaced apart from the peripheral edge. The at least one pocket extends from the opening towards an interior of the substrate. The at least one island is in the at least one pocket, and the at least one island includes a cutting surface that is exposed by the opening of the at least one pocket.07-04-2013
20130167450CUTTER ASSEMBLY WITH AT LEAST ONE ISLAND AND A METHOD OF MANUFACTURING A CUTTER ASSEMBLY - A cutter assembly includes a substrate and at least one island. The substrate includes a surface circumscribed by a peripheral edge, a flank surface extending from the peripheral edge, and at least one pocket with an opening on the surface and spaced apart from the peripheral edge. The at least one pocket extends from the opening towards an interior of the substrate. The at least one island is in the at least one pocket, and the at least one island includes a cutting surface that is exposed by the opening of the at least one pocket.07-04-2013
20130167451CUTTER ASSEMBLY WITH AT LEAST ONE ISLAND AND A METHOD OF MANUFACTURING A CUTTER ASSEMBLY - A cutter assembly includes a substrate and at least one island. The substrate includes a surface circumscribed by a peripheral edge, a flank surface extending from the peripheral edge, and at least one pocket with an opening on the surface and spaced apart from the peripheral edge. The at least one pocket extends from the opening towards an interior of the substrate. The at least one island is in the at least one pocket, and the at least one island includes a cutting surface that is exposed by the opening of the at least one pocket.07-04-2013
20130174494CUBIC BORON NITRIDE COMPACTS - The invention is for a cubic nitride compact comprising a polycrystalline mass of cubic boron nitride particles, present in an amount of at least 70 percent by volume and a binder phase, which is metallic in character. The invention extends to a compact in which the binder phase is preferably superalloy in character.07-11-2013
20110258939METHODS FOR PRODUCING NANOPARTICLES HAVING HIGH DEFECT DENSITY AND USES THEREOF - The disclosed subject matter is directed to a method for producing nanoparticles, as well as the nanoparticles produced by this method. In one embodiment, the nanoparticles produced by the disclosed method have a high defect density. A solution including cerium nitrate hexahydrate is combined with a solution including hexamethylenetetramine to form a combined aqueous solution. After a period of time, the combined aqueous solution is combined with a solution including copper nitrate trihydrate to form a further aqueous solution. The further aqueous solution is then mixed to produce nanoparticles.10-27-2011
20090019783Wear Resisting Particle and Wear Resisting Structure Member - Disclosed is a wear-resistant particle which can be substantially uniformly dispersed in a molten pool. Specifically disclosed is a wear-resistant particle (01-22-2009
20120247028 HARD-METAL BODY - The invention relates to hard-metal body comprising a hard-metal, the hard-metal comprising tungsten carbide grains and metal binder comprising cobalt having a concentration of tungsten dissolved therein, the body comprising a surface region adjacent a surface and a core region remote from the surface, the surface region and the core region being contiguous with each other; the mean binder fraction of the core region being greater than that of the surface region; the mean carbon concentration within the binder being higher in the surface region than in the core region; to tools comprising same and methods of making same.10-04-2012
20130133269ABRASIVE COMPACT WITH IMPROVED MACHINABILITY - An abrasive compact may include an ultra-hard phase that may include ultra-hard particles having a Knoop hardness of 5000 KHN or greater, a sinter catalyst, and a reaction phase that may include a catalyst-ceramic compound having a Knoop hardness lower than that of the ultra-hard phase.05-30-2013
20130125476CERIUM OXIDE SLURRY, CERIUM OXIDE POLISHING SLURRY AND METHOD FOR POLISHING SUBSTRATE USING THE SAME - The present invention provides a cerium oxide slurry, a cerium oxide polishing slurry, and a method of polishing a substrate by using the same, wherein decrease of scratches and polish at high speed can be realized by reducing the content of coarse grains by improving in the disperse state of cerium oxide particles. The invention relates to a cerium oxide slurry containing cerium oxide particles, dispersant and water, in which the ratio of weight of cerium oxide/weight of dispersant is in a range of 20 to 80 and relates a cerium oxide polishing slurry comprising the cerium oxide slurry and additives such as a water-soluble polymer.05-23-2013
20130125475TUNGSTEN RHENIUM COMPOUNDS AND COMPOSITES AND METHODS FOR FORMING THE SAME - The present invention relates to tungsten rhenium compounds and composites and to methods of forming the same. Tungsten and rhenium powders are mixed together and sintered at high temperature and high pressure to form a unique compound. An ultra hard material may also be added. The tungsten, rhenium, and ultra hard material are mixed together and then sintered at high temperature and high pressure.05-23-2013
20130125477INTERSECTING PLATE SHAPED ABRASIVE PARTICLES - Shaped abrasive particles comprising a ceramic and comprising a first plate integrally joined to a second plate at a predetermined angleβ.05-23-2013
20130139446SINTERED CUBIC BORON NITRIDE CUTTING TOOL - A sintered compact for use in making a cutting tool, the sintered compact including about 10 vol. % to about 90 vol. % cubic boron nitride, and a binder phase including about 0.1 vol. % to about 10 vol. % graphene. A method for a sintered compact including mixing a powder blend having about 10 vol. % to about 90 vol. % cubic boron nitride and about 0.1 vol. % to about 10 vol. % graphene, pressing the powder blend into a pill, and sintering the pill at high pressure and high temperature. A sintered cutting tool including about 10 vol. % to about 90 vol. % cubic boron nitride, and a binder phase including about 0.1 vol. % to about 10 vol. % graphene, wherein the sintering is performed at a pressure of about 45 kBar and a temperature of about 1500° C. for about 30 minutes.06-06-2013
20130139447METHOD FOR PRODUCING ABRASIVE GRAINS, METHOD FOR PRODUCING SLURRY, AND METHOD FOR PRODUCING POLISHING LIQUID - In the production method for abrasive grains according to the invention, an aqueous solution of a salt of a tetravalent metal element is mixed with an alkali solution, under conditions such that a prescribed parameter is 5.00 or greater, to obtain abrasive grains including a hydroxide of the tetravalent metal element.06-06-2013
20130152483METHOD FOR RECOVERY OF CERIUM OXIDE - A method for recovery of cerium oxide from the abrasive waste composed mainly of cerium oxide arising from the polishing of glass substrates, said method including the steps of (i) adding to the abrasive waste an aqueous solution of a basic substance; (ii) adding to the resulting solution a precipitant, thereby forming precipitates composed mainly of cerium oxide, and removing the supernatant liquid; (iii) adding to the resulting precipitates a solution of an acid substance, thereby making said precipitate slightly acid to neutral; (iv) washing the precipitates with an organic solvent; and (v) drying and crushing the precipitates.06-20-2013
20080196319CERAMIC ROUND TOOLS FOR THE MACHINING OF COMPOSITE MATERIALS - A tool, such as a monolithic ceramic round tool or ceramic inserted round tool fabricated from materials containing silicon nitride, is used for machining composite materials, plastics, and graphite. The tool contains at least a β-silicon nitride phase and a grain boundary phase that is composed of rare earth element oxides such as zirconia, yttria, ceria, and compounds that contain elements such as aluminum, magnesium, silicon, nitrogen and oxygen. The tool is formed by consolidating powder components at elevated temperature. The consolidated ceramic has a porosity of less than 2 vol. %. Composite materials that can be machined include glass fiber-polymer composites, whisker reinforced polymer composites, and carbon fiber containing composites.08-21-2008
20120255238Methods for Improving Thermal Stability - The present disclosure provides methods for preparing a silicon bonded PCD material involving a one step, double sweep process.10-11-2012
20120255237COOL CUTTING POLYCRYSTALLINE DIAMOND CUTTING ELEMENT - A PDC cutting element is described with a high abrasion thermally stable cutting edge that is supported by a diamond matrix which presents a non-planar wear surface to the rock interface. The non-planar wear surface of the supporting layer dramatically reduces the amount of heat generated at the PDC rock interface and provides rapid cutting with less weight on the bit for deep hole drilling applications.10-11-2012
20100307070METHOD OF FABRICATING POLYCRYSTALLINE DIAMOND AND A POLYCRYSTALLINE DIAMOND COMPACT - Embodiments of the invention relate to polycrystalline diamond (“PCD”) exhibiting enhanced diamond-to-diamond bonding. In an embodiment, PCD includes a plurality of diamond grains defining a plurality of interstitial regions. A metal-solvent catalyst occupies at least a portion of the plurality of interstitial regions. The plurality of diamond grains and the metal-solvent catalyst collectively exhibit a coercivity of about 115 Oersteads (“Oe”) or more and a specific magnetic saturation of about 15 Gauss·cm12-09-2010
20100307069POLYCRYSTALLINE DIAMOND COMPACT - Embodiments of the invention relate to polycrystalline diamond (“PCD”) exhibiting enhanced diamond-to-diamond bonding. In an embodiment, PCD includes a plurality of diamond grains defining a plurality of interstitial regions. A metal-solvent catalyst occupies at least a portion of the plurality of interstitial regions. The plurality of diamond grains and the metal-solvent catalyst collectively exhibit a coercivity of about 115 Oersteads (“Oe”) or more and a specific magnetic saturation of about 15 Gauss·cm12-09-2010
20120272583METHOD FOR MAKING FINE DIAMOND PDC - A method for making a PDC cutting element for use in rock drilling containing sub-micron size diamond particles within the diamond body. Metals that do not readily dissolve carbon are employed to limit the dissolution and re-precipitation of fine diamond during the sintering of the diamond to the substrate.11-01-2012
20120272582METHOD FOR MAKING LOW STRESS PDC - A method for making PDC with excellent abrasion resistance at high pressure in a single HPHT step without introducing high residual internal stress. In one aspect of the method, the diamond mass is subjected to an initial high pressure to compact the mass. The initial pressure is then lowered to a second pressure prior to the application of heat to the reaction cell. In another aspect, the diamond mass is subjected to an initial pressure to compact the mass, followed by raising the temperature to melt the sintering aid. The initial pressure is then lowered to a second pressure prior to lowering the temperature below the melting point of the sintering aid.11-01-2012
20130152482ABRASIVE ARTICLE FOR ULTRA HIGH MATERIAL REMOVAL RATE GRINDING OPERATIONS - An abrasive article including a bonded abrasive body having a bond material present in an amount of not greater than about 15 vol % for the total volume of the body, abrasive particulate material contained in the bond material, the abrasive particulate material including abrasive agglomerates and unagglomerated abrasive particles, wherein the body comprises an abrasive particulate ratio (APp:APagg) within a range between 3:1 and about 1:3, wherein APp represents the amount (vol %) of unagglomerated abrasive particles present in the body and APagg represents the amount (vol %) of abrasive agglomerates present in the body, and a porosity of at least about 42 vol % of the total volume of the bonded abrasive body.06-20-2013
20130180180COMPOSITE SHAPED ABRASIVE PARTICLES AND METHOD OF FORMING SAME - A method of forming a shaped abrasive particle includes forming a first mixture and a second mixture in a single forming process into an integral precursor shaped abrasive particle, wherein the first mixture has a different composition than a composition of the second mixture.07-18-2013
20130180181Preparation of Nanocrystalline Diamond Coated Diamond Particles and Applications Thereof - A method of making a polycrystalline diamond cutter element includes forming a blend, comprising a first particle size of polycrystalline diamond particles and a second particle size of polycrystalline diamond particles; forming a suspension of nanocrystalline diamond particles suspended in a solvent; and mixing the blend into the suspension to form a polycrystalline diamond mixture comprising nanocrystalline diamond coated polycrystalline diamond particles. The mixture is sintered with a substrate at high temperature and high pressure to form the polycrystalline diamond cutter element.07-18-2013
20130186006ABRASIVE PARTICLES HAVING PARTICULAR SHAPES AND METHODS OF FORMING SUCH PARTICLES - A method of forming an abrasive article includes depositing a mixture into an opening of a substrate, contacting an exposed surface of the mixture in the opening to a texturing form to form a textured preform, and removing the mixture from the opening and forming an abrasive particle having a textured surface.07-25-2013
20130186005FORMING SHAPED ABRASIVE PARTICLES - A method of forming a shaped abrasive particle includes extruding a mixture into an opening in a screen within an application zone and translating the screen and belt to a release zone and separating the screen and belt to form a precursor shaped abrasive particle on the belt, wherein the screen and belt are separated at a release angle of at least about 15° and not greater than about 45°, wherein the release angle is defined as an angle between a surface of the screen and a surface of the belt.07-25-2013
20130199107POLYCRYSTALLINE SUPERHARD MATERIAL - A polycrystalline superhard material comprises a sintered mass of superhard grains having a mean superhard grain contiguity of at least 62 percent and at most 92 percent. There is also disclosed a method of making such a polycrystalline superhard material. The method comprises providing a precursor body comprising superhard grains and interstices between the superhard grains, and introducing additive particles into the interstices to form a pre-sinter body. The pre-sinter body is submitted to a temperature and pressure at which superhard material is thermodynamically stable, sintering it and forming polycrystalline superhard material.08-08-2013
20130205683Preparation method of diamond-metal sawblades in reactive sintering production for singulating QFN packaging device - A method for preparing a sintered metal matrix diamond saw blade used for cutting a QFN packaging device includes steps of: preparing metal matrix by employing metal powder and inorganic filler, wet-mixing and stirring the metal matrix, adding diamond grains to form a mixed material with evenly distributed diamond grains, performing the mixed material through cold pressing for pre-shaping, preparing a sintered metal matrix diamond saw blade blank through hot-pressing sintering, and finally machine-shaping the sintered metal matrix diamond saw blade blank to meet the dimensional requirements. The firm interface metallurgical bond is formed between the metal matrix and the diamond grains by the hot-pressing sintering process, which enhances holding force of the metal matrix on the diamond grains, in such a manner that abrasive grains are not easy to fall off untimely during cutting, thus prolonging service life of the sintered metal matrix diamond saw blade.08-15-2013

Patent applications in class Metal or metal oxide