H.C. STARCK GMBH Patent applications |
Patent application number | Title | Published |
20140322064 | HARD METAL COMPOSITION - A process for producing a component includes providing a composition comprising hard material particles and a binder metal, and sintering the composition at a sintering temperature of from 1250° C. to 1400° C. for a period of from 3 to 15 minutes. The hard material particles comprise an inner core comprising fused tungsten carbide and an outer shell comprising tungsten carbide. The binder metal is selected from the group consisting of Co, Ni, Fe and alloys comprising at least one metal selected from Co, Ni and Fe. | 10-30-2014 |
20140302338 | NIOBIUM POWDERS HAVING A PARTICLE SHAPE - A valve metal powder having a particle shape factor mean value f, as determined by SEM image analysis, of 0.65≦f≦1, said powder has an average agglomerate particle size D50 value, as determined with a MasterSizer in accordance with ASTM B 822, of 40 to 200 μm and wherein the valve metal powder is niobium. | 10-09-2014 |
20140234548 | CERMET POWDER - A cermet powder includes a) from 50 to 90 wt-% of at least one hard material, and b) from 10 to 50 wt-% of a matrix metal composition. The wt.-% for a) and b) are based on a total weight of the cermet powder. The matrix metal composition comprises i) from 40 to 75 wt-% of iron and nickel, ii) from 18 to 35 wt-% of chromium, iii) from 3 to 20 wt.-% of molybdenum, and iv) from 0.5 to 4 wt-% of copper. The wt-% for i) to iv) are based in each case on a total weight of the matrix metal composition. A weight ratio of iron to nickel is from 3:1 to 1:3. | 08-21-2014 |
20140185190 | METHOD FOR PRODUCING ELECTROLYTIC CAPACITORS FROM VALVE METAL POWDERS - A process for producing an anode for an electrolytic capacitor includes pressing a tantalum powder around a tantalum wire, a tantalum ribbon, or a tantalum sheet to form a pressed body. The pressed body is sintered to form a porous sintered body. The porous sintered body is cooled to form a cooled porous sintered body. The cooled porous sintered body is treated with at least one oxidant comprising at least one of a gaseous oxidant and a liquid oxidant to form a treated sintered body. The treated sintered body is anodically oxidized in an electrolyte to form a dielectric layer. | 07-03-2014 |
20140138586 | COBALT- AND MOLYBDENUM-CONTAINING MIXED OXIDE CATALYST, AND PRODUCTION AND USE THEREOF AS WATER GAS SHIFT CATALYST - A mixed oxide catalyst includes a support material selected from the group comprising aluminum oxide, magnesium oxide, titanium oxide, and mixtures of aluminum oxide, magnesium oxide, and titanium oxide, and a catalyst active component comprising cobalt oxide and molybdenum oxide. The catalyst active component is nanodispersed in the support material. | 05-22-2014 |
20140086782 | FENI BINDER HAVING UNIVERSAL USABILITY - A method for producing a composite material includes providing a composition comprising at least one hardness carrier and a base binder alloy, and sintering the composition. The base binder alloy comprises from 66 to 93 wt.-% of nickel, from 7 to 34 wt.-% of iron, and from 0 to 9 wt.-% of cobalt, wherein the wt.-% proportions of the base binder alloy add up to 100 wt.-%. | 03-27-2014 |
20130306902 | PROCESS FOR PRODUCING A PURE-PHASE MULTISUBSTANCE SYSTEM, A CERAMIC MATERIAL BASED ON THE PURE-PHASE MULTISUBSTANCE SYSTEM, A SHAPED BODY, AND A COMPOSITE FORMED THEREFROM - A process for producing a homogenous multi compound system which is hydroxide- and/or oxide-based includes a first alternative process comprising providing a first and a second refractory metal in respective hydrofluoric solutions, and mixing the first and second hydrofluoric solutions to provide a mixed hydrofluoric solution comprising a dissolved first and second refractory metal. A second alternative process comprises dissolving the first and the second refractory metal in an alternative mixed hydrofluoric solution. The mixed hydrofluoric solution or the alternative mixed hydrofluoric solution is precipitated with a precipitant to provide a solids mixture in a suspension. The first and second refractory metal is from the group consisting of Mo, W, Nb, Re, Zr, Hf, V, Sb, Si, Al, and Ta. The first and second refractory metal are different. At least one of the first and second refractory metal is provided as a fluoro and/or as an oxyfluoro complex. | 11-21-2013 |
20130068365 | DISPERSION, METHOD FOR PRODUCING SAME, AND USE THEREOF - A dispersion comprising hard material particles and at least one organic binder and/or at least one plasticizer. The hard material particles comprise an inner core comprising a fused tungsten carbide and an outer shell comprising tungsten carbide. | 03-21-2013 |
20130029153 | AMMONIUM PARATUNGSTATE HYDRATES AND AMMONIUM PARATUNGSTATE DECAHYDRATE - The invention is directed to ammonium paratungstate decahydrate containing at least 75% of crystals having a length of at least 200 μm and having a ratio of length to width of less than 4.5:1. | 01-31-2013 |
20120244354 | INORGANIC COMPOUNDS - A niobium suboxide powder comprising niobium suboxide particles having a bulk nitrogen content of between 500 to 20,000 ppm. The nitrogen is distributed in the bulk of the powder particles. The nitrogen at least partly is present in the form of at least one of Nb | 09-27-2012 |
20120132033 | METAL POWDER - The invention relates to novel pre-alloyed metal powders a method for production and use thereof. | 05-31-2012 |
20120075772 | PROCESS FOR THE PRODUCTION OF ELECTROLYTE CAPACITORS - The invention relates to a process for the production of electrolyte capacitors having a low equivalent series resistance and low residual current, electrolyte capacitors produced by this process and the use of such electrolyte capacitors. | 03-29-2012 |
20120045647 | TUNGSTIC ACID POWDER CONSISTING OF SPHERICAL TUNGSTEN PARTICLES AND METHOD FOR PRODUCING SAME - Process for the production of a powdered spherical tungstic acid by acidification of an aqueous alkaline tungstate solution with mineral acid at elevated temperature, preferably in a continuous stirred tank or a cascade of at least 2 continuous stirred tanks, and tungstic acid obtainable in this way, which is characterised by a high bulk density and spherical morphology. | 02-23-2012 |
20120037065 | CRUCIBLE FOR SILICON SUITABLE FOR PRODUCING SEMICONDUCTORS - A crucible for producing a silicon suitable for producing a semiconductor includes a plurality of components and at least one unclosed joint gap. | 02-16-2012 |
20110300470 | DEVICE AND METHOD FOR THE PRODUCTION OF COMPOUNDS BY PRECIPITATION - The invention relates to a device and a method for the production of compounds by precipitation of solids from solutions, the physical and chemical properties of the solid particles formed on precipitation being flexible and can be independently fixable. Custom products can thus be produced with very high space-time yields and a particulate nickel/cobalt mixed hydroxide of formula Ni | 12-08-2011 |
20110243785 | PRECURSOR FOR THE PRODUCTION OF SINTERED METALLIC COMPONENTS, A PROCESS FOR PRODUCING THE PRECURSOR AND THE PRODUCTION OF COMPONENTS - A precursor for the production of a sintered metallic component includes a core comprising one particle of a first metallic powder having a particle size d | 10-06-2011 |
20110224085 | MAGNESIUM DIBORIDE - An amorphous or a partially crystalline magnesium diboride comprising a crystalline material content of ≦25% by weight as determined by an X-ray powder diffraction. | 09-15-2011 |
20110206944 | PROCESS FOR PRODUCING SHAPED REFRACTORY METAL BODIES - The present invention relates to a process for producing shaped articles composed of refractory metals. | 08-25-2011 |
20110180748 | POWDERED NIAM1 BM2C(O)X(OH)YCOMPOUNDS, METHOD FOR THE PRODUCTION THEREOF AND USE THEREOF IN BATTERIES - The invention is directed to a pulverulent compound of the formula Ni | 07-28-2011 |
20110176983 | METHOD FOR PURIFYING ELEMENTAL BORON - Elemental boron with a boron content of at least 96.8% by weight, an oxygen content of at most 1.6% by weight, a nitrogen content of at most 0.2% by weight, a crystallinity of 30% by weight or less, and a particle size distribution with a d100 value of 9 μm or less. | 07-21-2011 |
20110170238 | VALVE METAL AND VALVE METAL OXIDE AGGLOMERATE POWDERS AND METHOD FOR THE PRODUCTION THEREOF - At least one of a valve metal sintered capacitor anode body and a suboxide valve metal sintered capacitor anode body with a particle density of >88% of a theoretical density. | 07-14-2011 |
20110160036 | VALVE METAL OXIDE FORMULATION - A formulation of at least one of a partially and a fully stabilized zirconium oxide powder includes at least one organic auxiliary substance wherein a pressing pressure so as to obtain a green density of at least 50% of a theoretical density is 200 MPa or less and a cohesiveness is 0.7 or more. | 06-30-2011 |
20110128676 | PROCESS FOR PRODUCING ELECTROLYTIC CAPACITORS HAVING A LOW LEAKAGE CURRENT - Process for producing a capacitor anode based on at least one of a valve metal and a compound having properties comparable to a valve metal includes providing a pressing or cutting tool which is at least one of made of and coated with a pressing or cutting tool material comprising at least one of a metal carbide, an oxide, a boride, a nitride, a silicide, a carbonitride or alloys thereof, a ceramic material, a hardened steel, an alloy steel, and a capacitor anode material. Particles of the at least one of a valve metal and a compound having properties comparable to a valve metal are pressed or cut with the pressing or cutting tool so as to produce a porous electrode body and form the capacitor anode. | 06-02-2011 |
20110123822 | NANOSIZE STRUCTURES COMPOSED OF VALVE METALS AND VALVE METAL SUBOXIDES AND PROCESS FOR PRODUCING THEM - A strip-like or sheet-like valve metal or valve metal suboxide structure which has a transverse dimension of from 5 to 100 nm. | 05-26-2011 |
20110123709 | PROCESS FOR PRODUCING PURE AMMONIUM PERRHENATE - A process for preparing a pure ammonium perrhenate includes producing a first aqueous suspension containing an ammonium perrhenate. A stoichiometric amount of a nitric acid is added to the first aqueous suspension so as to produce a second suspension. The second suspension is introduced into a cathode space of an electrolysis cell. The electrolysis cell is divided by a cation-exchange membrane into the cathode space and an anode space. The nitric acid is cathodically reduced to a nitrous acid in the cathode space by applying an electric potential. The nitrous acid is reacted with ammonium ions of the ammonium perrhenate so as to form an aqueous perrhenic acid. Potassium ions are removed from the aqueous perrhenic acid. At least a stoichiometric amount of ammonia is added to the aqueous perrhenic acid so as to produce the pure ammonium perrhenate. | 05-26-2011 |
20110116965 | REDUCTION METHOD - Processes comprising: melting a mixture comprising a valve metal precursor and a diluting agent in at least one first vessel under a first set of temperature and residence time conditions; transferring the mixture to at least one second vessel; and initiating, in the at least one second vessel, a reaction of the valve metal precursor to form a valve metal under a second set of temperature and residence time conditions; valve metal powder prepared thereby and uses therefor. | 05-19-2011 |
20110088513 | METHOD FOR SOLUBILIZING MOLYBDENUM OXIDE CONCENTRATES - A process for digesting molybdenum oxide concentrates includes suspending a molybdenum-containing starting material in an aqueous solution so as to obtain a suspension. While stirring, an oxidizing agent and an alkali solution of at least one alkali metal are metered to the suspension so as to set a pH and produce a product having a molybdenum content of at least 98% of the molybdenum-containing starting material. The alkali metal is selected from the group consisting of Na, K and Li. | 04-21-2011 |
20110070148 | METHOD FOR PRODUCTION OF AMMONIUM PARATUNGSTATE TETRAHYDRATE AND HIGHLY PURE AMMONIUM PARATUNGSTATE TETRAHYDRATE - The invention is directed to a method for the production of ammonium paratungstate tetrahydrate by thermal treatment of ammonium paratungstate decahydrate in an aqueous suspension. The ammonium paratungstate tetrahydrate can be produced with high purity and high yield. The production method may furthermore be carried out in a simple and energy-efficient manner. | 03-24-2011 |
20110027690 | ELECTROLYTE FOR COST-EFFECTIVE, ELECTROLYTE-SUPPORTED HIGH-TEMPERATURE FUEL CELL HAVING HIGH PERFORMANCE AND HIGH MECHANICAL STRENGTH - Electrolyte for an electrolyte-supported high-temperature fuel cell includes zirconium(IV) oxide doped with from 3.5 mol % to 6.5 mol % of ytterbium(III) oxide. The electrolyte has a thermal expansion coefficient (TEC) based on 30° C. of from 10.6*10 | 02-03-2011 |
20100310869 | POWDER NiaMbOx(OH)y COMPOUNDS, PROCESSES FOR MAKING THE SAME, AND USES THEREOF IN BATTERIES - Powdery compounds of the formulation Ni | 12-09-2010 |
20100239855 | TOOL - Coated metal cutting tools with reduced adhesion weat and improved thermal resistance, processes for making the same and methods of use. | 09-23-2010 |
20100233579 | ZIRCONIUM OXIDE AND METHOD FOR THE PRODUCTION THEREOF - The invention relates to a pulverulent zirconium oxide containing metal oxides from the group consisting of scandium, yttrium, rare earths and mixtures thereof, processes for producing them and their use in fuel cells, in particular for the production of electrolyte substrates for ceramic fuel cells. | 09-16-2010 |
20100148124 | PROCESS FOR PREPARING POLYTHIOPHENES - The invention is related to a process for preparing polythiophenes. The polythiophenes are prepared by oxidatively polymerizing a thiophene or thiophene derivative with an oxidizing agent, wherein the oxidizing agent used is at least one hypervalent iodine compound. The invention further relates to a process for producing dispersions and a process for producing conductive layers. | 06-17-2010 |
20100098619 | METHOD FOR PRODUCING AMMONIUM PARATUNGSTATE HYDRATES AND AMMONIUM PARATUNGSTATE DECAHYDRATE - The invention is directed to a process for the continuous preparation of ammonium paratungstate hydrate by back reextraction of a tungsten-laden organic phase with an ammonia-containing aqueous solution in a mixer-settler apparatus. The reextraction is carried out at an NH | 04-22-2010 |
20100077887 | METAL FORMULATIONS - The invention is directed to a formulation containing at least one hard material powder and at least 2 binder metal powders. The formulation is characterized in that the cobalt is completely contained in the first binder metal powder and is prealloyed with one or more elements of groups 3 to 8 of the Periodic Table of the Elements which are elements of the fourth period and at least one further binder metal powder from the group consisting of powders of the elements Fe, Ni, Al, Mn, Cr and alloys of these elements with one another is present and the further binder metal powders do not contain any cobalt in unprealloyed form. The invention further relates to the use of the inventive formulation in a cemented hard material, a porous sintered agglomerate and a thermal spray powder. The invention also relates to a method of controlling the toxic effect of cobalt-containing metal formulation by utilizing the inventive formulation. | 04-01-2010 |
20100068510 | SEMIFINISHED PRODUCTS WITH A STRUCTURED SINTER-ACTIVE SURFACE AND A PROCESS FOR THEIR PRODUCTION - The invention comprises semifinished products with a structured surface, the semifinished product comprising an oxidized and subsequently re-reduced surface containing at least one refractory metal, and also a process for their production and their use for producing high-capacitance components. | 03-18-2010 |
20100061879 | METAL POWDER - The invention relates to novel pre-alloyed metal powders a method for production and use thereof. | 03-11-2010 |
20100055487 | METHOD FOR COATING A SUBSTRATE SURFACE AND COATED PRODUCT - Disclosed is a process for the reprocessing or production of a sputter target or an X-ray anode wherein a gas flow forms a gas/powder mixture with a powder of a material chosen from the group consisting of niobium, tantalum, tungsten, molybdenum, titanium, zirconium, mixtures of two or more thereof and alloys thereof with at least two thereof or with other metals, the powder has a particle size of 0.5 to 150 μm, wherein a supersonic speed is imparted to the gas flow and the jet of supersonic speed is directed on to the surface of the object to be reprocessed or produced. | 03-04-2010 |
20100047622 | METAL POWDER - The invention provides for a cermet powder containing
| 02-25-2010 |
20100028706 | SHAPED BODY - The present invention relates to blanks for workpieces composed of a base body, which comprises at least one refractory metal and an oxidation protection layer composed of at least one metal layer, and also processes for producing them. | 02-04-2010 |
20100028250 | METHOD FOR PRODUCTION OFAMMONIUM PARATUNGSTATE TETRAHYDRATE AND HIGHLY PURE AMMONIUM PARATUNGSTATE TETRAHYDRATE - The invention is directed to a method for the production of ammonium paratungstate tetrahydrate by thermal treatment of ammonium paratungstate decahydrate in an aqueous suspension. The ammonium paratungstate tetrahydrate can be produced with high purity and high yield. The production method may furthermore be carried out in a simple and energy-efficient manner. | 02-04-2010 |
20100003157 | METALLIC POWDER MIXTURES - The invention relates to mixtures of metal, alloy or composite powders which have a mean particle diameter D50 of not more than 75 μm, preferably not more than 25 μm, and are produced in a process in which a starting powder is firstly deformed to give platelet-like particles and these are then comminuted in the presence of milling aids together with further additives and also the use of these powder mixtures and shaped articles produced therefrom. | 01-07-2010 |
20090320648 | RECOVERY OF MOLYBDENUM FROM MOLYBDENUM BEARING SULFIDE MATERIALS BY BIOLEACHING IN THE PRESENCE OF IRON - The invention relates to a method of recovering molybdenum from a molybdenum bearing sulfide material. The material is contacted with a leaching solution in the presence of iron compounds and mesophilic or thermophilic iron oxidizing microorganisms and subsequently, a leaching process is performed by controlling the molar ratio of dissolved ferric iron to dissolved molybdenum. Preferably, a high amount and molar excess of dissolved iron is used. The presence of high concentrations of ferric iron in bioleach solutions allows iron-oxidizing microorganisms to grow and oxidize iron and bioleach molybdenite at dissolved Mo concentrations as high as 4.4 g/L. Organic metabolites were not required for protecting cells from Mo toxicity. Maximum dissolution rates depend on reactor configuration, with agglomerated material simulating heap leaching of almost 1% Mo/day, but up to 10.2% Mo/day in suspension/stirred reactor configurations, with rate highly dependent on temperature within the range of 25° C. to 40° C. The ultimate extent of Mo removal from the molybdenum bearing sulfide material is 89%. Finally, molybdenum is recovered from a leach residue of the leaching process. | 12-31-2009 |
20090310285 | PROCESS FOR PREPARING POLYTHIOPHENES - The invention relates to a process for preparing polythiophene dispersions or for in situ deposition of polythiophenes. The dispersion is prepared by oxidative polymerizing of a thiophene or thiophene derivative, wherein an oxidizing agent is used and is at least one organic peroxidic compound excluding diacyl peroxide. The invention also relates to the use of specific organic peroxides as oxidizing agents in the oxidative polymerization of thiophenes. The invention further relates to a process to process a conductive layer and the use of the conductive layer. | 12-17-2009 |
20090285712 | METAL POWDER - The present invention relates to a metal powder mixture that is suitable for producing sintered bodies. The powder mixture is suitable as a binder for hard metals and contains: a) at least one prealloyed powder selected from the group of iron/nickel, iron/cobalt, iron/nickel/cobalt and nickel/cobalt; b) at least one element powder selected from the group of iron, nickel and cobalt or a prealloyed powder selected from the group consisting of iron/nickel, iron/cobalt, iron/nickel/cobalt and nickel/cobalt which is different from component a). The invention also relates to a cemented hard material which uses the inventive powder mixture and a hard material powder, wherein the overall composition of the components a) and b) together contains not more than 90% by weight of cobalt and not more than 70% by weight of nickel and the iron content. | 11-19-2009 |
20090283723 | OLIGOMERIC COMPOUNDS WHICH FORM A SEMICONDUCTOR LAYER - Oligomeric compounds of the general formula (M), mixtures thereof and electronic components containing the same: | 11-19-2009 |
20090278095 | CAPACITOR POWDER - Disclosed herein are capacitors having an anode based on niobium and a barrier layer based on niobium pentoxide, at least the barrier layer having a content of vanadium and process for their preparation and use. | 11-12-2009 |
20090277301 | METALLIC POWDER MIXTURES - The invention relates to mixtures of metal, alloy or composite powders which have a mean particle diameter D50 of not more than 75 μm, preferably not more than 25 μm, and are produced in a process in which a starting powder is firstly deformed to give platelet-like particles and these are then comminuted in the presence of milling aids together with further additives and also the use of these powder mixtures and shaped articles produced therefrom. | 11-12-2009 |
20090255372 | RECYCLING OF SUPERALLOYS WITH THE AID OF AN ALKALI METAL SALT BATH - The invention relates to a process for recovering valuable metals from a superalloy which has the steps of digesting the superalloy in a salt melt. The salt melt contains 60-95% by weight of NaOH and 5-40% by weight of Na | 10-15-2009 |
20090123690 | Metallic Powder Mixtures - The invention relates to blends of metal, alloy or composite powders having a maximum mean particle diameter D50 of 75, preferably a maximum of 25 μm, which are produced according to a process in which a base powder is first transformed into flake-like particles and these are then crushed in the presence of milling auxiliary agents, with further additives and also the use of these powder blends and moulded objects produced from them. | 05-14-2009 |
20090030149 | Process For Producing Aqueous Dispersion Of Composite Of Poly(3,4-Dialkoxythiophene) With Polyanion - The present invention provides a method for the production of an aqueous dispersion containing an electroconductive polymer component which enables electroconductive thin films which are outstanding in their transparency and electroconductivity to be formed, together with the aqueous dispersion obtained by said method. This method includes a stage in which a 3,4-dialkoxythiophene is polymerized in an aqueous solvent using an oxidizing agent in the presence of a polyanion and, in this stage, said oxidizing agent is added by the dropwise addition of a solution or dispersion containing said oxidizing agent to the reaction solution or, alternatively, in the polymerization stage, the alkali metal ion concentration in the reaction liquid is maintained at no more than 400 ppm. | 01-29-2009 |
20080291605 | NIOBIUM SUBOXIDE POWDER - A niobium suboxide powder comprising 100 to 600 ppm of magnesium is described. The niobium suboxide powder may (alternatively or in addition to 100 to 600 ppm of magnesium) further include 50 to 400 ppm of molybdenum and/or tungsten. The niobium suboxide powder is suitable for the production of: capacitors having an insulator layer of niobium pentoxide; capacitor anodes produced from the niobium suboxide powder; and corresponding capacitors. | 11-27-2008 |
20080254970 | Niobium Compound - A niobium compound, ammonium(bisaquo oxobisoxalato)niobate (NH | 10-16-2008 |
20080254293 | Reduction Method - Processes comprising: melting a mixture comprising a valve metal precursor and a diluting agent in at least one first vessel under a first set of temperature and residence time conditions; transferring the mixture to at least one second vessel; and initiating, in the at least one second vessel, a reaction of the valve metal precursor to form a valve metal under a second set of temperature and residence time conditions; valve metal powder prepared thereby and uses therefor. | 10-16-2008 |
20080199393 | Inorganic Compounds - Disclosed is a niobium suboxide powder for the manufacture of capacitors with higher break down voltages, higher temperatures of operation and elongated lifetimes. The powder is doped with nitrogen which is at least partly present in the form homogeneously distributed, x-ray detectable Nb | 08-21-2008 |