Patent application number | Description | Published |
20110248106 | PROCESS FOR PRODUCING ALUMINUM TITANATE-BASED CERAMICS - The invention is to provide a novel process for producing aluminum titanate-based ceramics having a low coefficient of thermal expansion. The invention is a process for producing an aluminum titanate-based ceramic comprising firing a starting material mixture containing a titanium source powder, an aluminum source powder and a silicon source powder, wherein the particle diameter corresponding to a cumulative percentage of 50% (D50) on a volume basis of the silicon source powder is not greater than 5 μm. The invention includes the process wherein the starting material mixture further contains a magnesium source powder. | 10-13-2011 |
20110287921 | PROCESS FOR PRODUCING ALUMINUM TITANATE-BASED FIRED BODY - The invention is to provide a process for producing a fired body comprising an aluminum titanate-based ceramic of which the shrinkage ratio in firing (firing shrinkage ratio) can be suppressed low and which is excellent in thermal decomposition resistance. The invention is a process for producing an aluminum titanate-based fired body comprising a step of firing a shaped body of a starting material mixture containing an aluminum source powder, a titanium source powder and a magnesium source powder, wherein the titanium source powder has a specific particle diameter distribution characteristic. In the starting material mixture, the ratio of the Al | 11-24-2011 |
20120003464 | POROUS CERAMICS SHAPED BODY, AND PROCESS FOR PRODUCING SAME - The process for producing a porous ceramics shaped body comprises a step of firing a shaped body of a starting material mixture which contains an aluminum source powder and a titanium source powder, and
| 01-05-2012 |
20120028784 | PROCESS FOR PRODUCING ALUMINUM TITANATE-BASED FIRED BODY - The invention is to provide a process which can produce a fired body comprising aluminum titanate-based ceramics being excellent in thermal decomposition resistance and having high mechanical strength. The invention is a process for producing an aluminum titanate-based fired body, comprising a step of firing a shaped body of a starting material mixture which contains an aluminum source powder and a titanium source powder, and the aluminum source powder satisfies the following formula (1). In the formula, D90 is a particle diameter corresponding to a cumulative percentage of 90% on a volume basis and D10 is a particle diameter corresponding to a cumulative percentage of 10% on a volume basis, and these are determined from a particle size distribution of the aluminum source powder measured by a laser diffractometry. | 02-02-2012 |
20120034446 | PROCESS FOR PRODUCING ALUMINUM TITANATE-BASED CERAMICS FIRED BODY, AND ALUMINUM TITANATE-BASED CERAMICS FIRED BODY - The invention is to provide a process for producing an aluminum titanate-based ceramics capable of realizing low thermal expansion and high mechanical strength and having little dimensional change in firing, at a low firing temperature of lower than 1500° C. The invention is a process for producing an aluminum titanate-based ceramics fired body comprising a step of shaping a ceramic plastic rammed earth containing a precursor mixture and an organic-based binder into a predetermined shape, wherein the starting material mixture containing a titanium source powder, an aluminum source powder and a silicon source powder, and a step of maintaining the shaped ceramics plastic rammed earth within a temperature range of from 900 to 1350° C. at a temperature change per hour of from −50 to +50° C./hr for 3 hours or more, followed by heating up to a temperature of 1400° C. or higher and firing at the temperature. And the invention is an aluminum titanate-based ceramics fired body that is obtained by the said invention and having a porosity of from 30 to 60%. | 02-09-2012 |
20120198805 | PROCESS FOR PRODUCING ALUMINUM TITANATE-BASED CERAMICS, AND ALUMINUM TITANATE-BASED CERAMICS - The present invention is a process for producing an aluminum titanate ceramics, comprising firing a starting material mixture containing a titanium source powder and an aluminum source powder, wherein a content of niobium, expressed on the oxide basis, is not less than 0.2 parts by mass and not more than 2.5 parts by mass in 100 parts by mass of the starting material mixture. | 08-09-2012 |
20120220445 | PROCESS FOR PRODUCING ALUMINUM TITANATE-BASED FIRED BODY, AND ALUMINUM TITANATE-BASED FIRED BODY - The present invention is a process for producing an aluminum titanate-based fired body, comprising shaping a starting material mixture containing inorganic compound source powders including an aluminum source powder and a titanium source powder, as well as an additive, degreasing the obtained shaped body at 150 to 900° C., and firing the degreased shaped body at not lower than 1300° C., wherein the inorganic compound source powders contain 1 to 5 parts by mass of particles having a particle diameter of not larger than 0.1 μm in 100 parts by mass thereof. | 08-30-2012 |
20130036612 | METHOD FOR MANUFACTURING A HONEYCOMB-STRUCTURED OBJECT - A method for manufacturing a honeycomb-structured object having a plurality of through holes having ends thereof plugged, including a step of pressing a plugging material against one end surface of a honeycomb-structured object | 02-14-2013 |
20130043624 | GREEN COMPACT AND METHOD FOR PRODUCING ALUMINUM TITANATE SINTERED BODY - A green molded body comprises an organic binder and an inorganic compound source powder containing an aluminum source powder and a titanium source powder, wherein the organic binder is such that the viscosity at 20° C. of a 2 wt % aqueous solution of the organic binder is 5000 mPa·s or higher. A method for producing an aluminum titanate fired body includes the steps of molding a raw material mixture comprising an organic binder and an inorganic compound source powder containing an aluminum source powder and a titanium source powder to obtain a green molded body; heating the green molded body obtained at 150° C. to 900° C. to remove the organic binder; and firing the green molded body from which the organic binder has been removed, at 1300° C. or higher, wherein the organic binder is such that the viscosity at 20° C. of a 2 wt % aqueous solution of the organic binder is 5000 mPa·s or higher. | 02-21-2013 |
20130140736 | MASK FOR SEALING HONEYCOMB STRUCTURE, AND SEALING METHOD FOR HONEYCOMB STRUCTURE USING SAME - The mask of the invention is used for plugging of the cells of a honeycomb structure, and it has a plurality of first through-holes running through a thickness direction of the mask, in a region that is to contact with an end face of the honeycomb structure when used. The first through-holes have an open area of 0.03 mm | 06-06-2013 |
20130140747 | METHOD FOR MANUFACTURING CERAMIC HONEYCOMB FIRED BODY - Manufacture of ceramic honeycomb fired body. Green molded body is placed on a firing base and fired. The firing base and green molded body are each a column containing a ceramic raw material and having a partition wall forming a plurality of flow paths, and patterns of end surfaces of the two partition walls are the same as each other as seen from an extending direction of the flow paths. The green molded body is placed on the firing base displaced in a horizontal direction by a predetermined distance, or rotated around a vertical axis V of the green molded body by a predetermined angle θ, so that only a part of the lower side end surface of the partition wall of the green molded body is in contact with the upper side end surface of the partition wall of the firing base. | 06-06-2013 |
20130180111 | FIXING JIG, FIXING METHOD, AND HONEYCOMB FILTER PRODUCTION METHOD - A fixing jig includes a pedestal including a placing surface on which a columnar honeycomb structure is placed, holding members fixed to the pedestal and configured to hold a side surface of the honeycomb structure placed on the placing surface, and drawing and fixing members fixed to the pedestal and configured to draw and fix the surface on the pedestal side in the outer circumferential portion of a mask placed on the honeycomb structure. Consequently, the fixing jig can fix the honeycomb structure and the mask aligned with each other and is less likely to hinder the alignment of the mask. | 07-18-2013 |
20130207323 | SEALING MATERIAL AND METHOD FOR MANUFACTURING CERAMIC HONEYCOMB FIRED BODY - To provide a plugging material that is hardened at low temperature (e.g., 100 to 300° C.), can obtain excellent adhesion to partition walls of a ceramic honeycomb sintered body, and can obtain excellent heat resistance. A plugging material comprising a water-based inorganic adhesive and aluminum titanate-based ceramic particles. | 08-15-2013 |
20130269303 | GREEN FORMED BODY, AND PROCESS FOR PRODUCTION OF HONEYCOMB STRUCTURE - The present invention provides a green molded body capable of easily controlling the porosity of a honeycomb structure. One aspect of the present invention is a green molded body composed of a honeycomb-shaped cylindrical body | 10-17-2013 |