Producing Metal Oxide Containing Product Patents (Class 264/681)
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Publication number: 20140021662Abstract: A manufacturing method of a sintered ceramic body mixes barium silicate with aluminum oxide, a glass material, and an additive oxide to prepare a material mixture, molds the material mixture and fires the molded object. The barium silicate is monoclinic and has an average particle diameter in a range of 0.3 ?m to 1 ?m and a specific surface area in a range of 5 m2/g to 20 m2/g. The aluminum oxide has an average particle diameter in a range of 0.4 ?m to 10 ?m, a specific surface area in a range of 0.8 m2/g to 8 m2/g. A volume ratio of the aluminum oxide to the barium silicate is in a range of 10% by volume to 25% by volume.Type: ApplicationFiled: September 11, 2013Publication date: January 23, 2014Applicant: NGK INSULATORS, LTD.Inventors: Yunie IZUMI, Yoshimasa KOBAYASHI, Yuji KATSUDA
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Publication number: 20140021661Abstract: A container for heat treatment of a positive-electrode active material for a lithium-ion battery to the present invention is characterized by having a base portion containing 60 to 95 mass % of alumina, and a surface portion containing 20 to 80 mass % of spinel and formed integrally with the base portion. Moreover, a production method of the present invention is characterized by comprising a step of placing an alumina-based powder, a step of placing a spinel-based powder above the alumina-based powder, a step of forming a compact by compressing the powders and a step of firing the compact.Type: ApplicationFiled: June 28, 2011Publication date: January 23, 2014Applicant: TYK CORPORATIONInventors: Yasuta Koike, Takashi Achiha, Takahiro Kamiya
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Patent number: 8632723Abstract: Provided is a manufacturing method for preferentially-oriented oxide ceramics having a high degree of crystal orientation. The manufacturing method includes: obtaining slurry containing an oxide crystal B having magnetic anisotropy; applying a magnetic field to the oxide crystal B, and obtaining a compact of the oxide crystal B; and subjecting the compact to oxidation treatment to obtain preferentially-oriented oxide ceramics including a compact of an oxide crystal C having a crystal system that is different from a crystal system of one of a part and a whole of the oxide crystal B. By (1) reacting raw materials, (2) reducing the oxide crystal A, or (3) keeping the oxide crystal A at high temperature and quenching the oxide crystal A, the oxide crystal B is obtained to be used in the slurry.Type: GrantFiled: February 8, 2011Date of Patent: January 21, 2014Assignees: Canon Kabushiki Kaisha, University of YamanashiInventors: Takayuki Watanabe, Makoto Kubota, Jumpei Hayashi, Nobuhiro Kumada, Tomoaki Mochiduki
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Publication number: 20140014500Abstract: A sintered body which includes at least indium oxide and gallium oxide and comprises voids each having a volume of 14000 ?m3 or more in an amount of 0.03 vol % or less.Type: ApplicationFiled: March 26, 2012Publication date: January 16, 2014Inventors: Shigekazu Tomai, Shigeo Matsuzaki, Koki Yano, Makoto Ando, Kazuaki Ebata, Masayuki Itose
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Patent number: 8628702Abstract: A supporting paste containing a component (A) which loses water in a temperature range between 110° C. and 1100° C., a component (B) which is geometrically stable at temperatures between 110° C. and 1100° C., solvent and auxiliary agents. Also, the preparation of such a supporting paste and to its use in particular in the field of dental technology.Type: GrantFiled: December 20, 2006Date of Patent: January 14, 2014Assignee: Ivoclar Vivadent AGInventors: Konrad Hagenbuch, Volker Rheinberger
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Publication number: 20140011031Abstract: A method for manufacturing sintered refractory grains containing Cr2CO3 from an initial refractory product including one or more chromium that includes: A) optionally, \crushing the starting refractory material; B) grinding a filler, comprising said starting refractory material in a liquid medium to obtain a suspension of particles of said starting refractory material; C) preparing a starting mixture including at least 1 wt % of particles of the suspension obtained during the preceding step; D) shaping the starting mixture into the shape of a preform; E) optionally drying the preform obtained in step D); F) sintering the preform so as to obtain a sintered body; G) optionally grinding the sintered body; and H) the optional selection by particle size.Type: ApplicationFiled: February 14, 2012Publication date: January 9, 2014Applicant: SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEENInventors: Cyril Linnot, Olivier Citti
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Publication number: 20130345043Abstract: To provide an aluminum magnesium titanate crystal structure which can be used stably in variable high temperatures, because of its excellent heat resistance, thermal shock resistance, high thermal decomposition resistance and high mechanical property, and a process for its production. An aluminum magnesium titanate crystal structure, which is a solid solution wherein at least some of Al atoms in the surface layer of aluminum magnesium titanate crystal represented by the empirical formula MgxAl2(1?x)Ti(1+x)O5 (wherein 0.1?x<1) are substituted with Si atoms, and which has a thermal expansion coefficient of from ?6×10?6 (1/K) to 6×10?6 (1/K) in a range of from 50 to 800° C. at a temperature raising rate of 20° C./min, and a remaining ratio of aluminum magnesium titanate of at least 50%, when held in an atmosphere of 1,100° C. for 300 hours.Type: ApplicationFiled: August 28, 2013Publication date: December 26, 2013Applicant: OHCERA CO., LTD.Inventors: Tsutomu FUKUDA, Masahiro Fukuda, Masaaki Fukuda, Toshinobu Yoko, Masahide Takahashi
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Patent number: 8609019Abstract: A method for producing a refractory molded boy using a material composition having a fine-grain fraction with grain sizes of less than 100 ?m and a coarse-grain fraction with grain sizes of more than 100 ?m. The method includes the steps of adding a dispersing agent and/or a liquefier to the material composition unless the material compositing already includes the dispersing agent and/or liquefier, forming the material composition into a molded body, and sintering the molded body at a temperature above 1300 degrees Celsius.Type: GrantFiled: May 14, 2009Date of Patent: December 17, 2013Assignee: Siemens AktiengesellschaftInventors: Christos Aneziris, Nora Gerlach, Holger Grote, Claus Krusch
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Publication number: 20130330267Abstract: An ITO film having a band gap in a range of 4.0 eV to 4.5 eV.Type: ApplicationFiled: June 10, 2013Publication date: December 12, 2013Inventors: Takehiro Yonezawa, Kazuhiko Yamasaki, Ai Takenoshita
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Publication number: 20130306469Abstract: Provided is an oxide sintered body suitably used for producing an oxide semiconductor film for a display device, the oxide sintered body capable of forming an oxide semiconductor film exerting excellent conductivity, having high relative density and excellent in-plane uniformity, and exhibiting high carrier mobility. This oxide sintered body is obtained by combining and sintering a zinc oxide powder, a tin oxide powder, and an indium oxide powder. The oxide sintered body satisfies the following equation (1) when the oxide sintered body is subjected to X-ray diffraction, Equation (1): [A/(A+B+C+D)]×100?70. In equation (1), A represents the XRD peak intensity in the vicinity of 2?=34°, B represents the XRD peak intensity in the vicinity of 2?=31°, C represents the XRD peak intensity in the vicinity of 2?=35°, and D represents the XRD peak intensity in the vicinity of 2?=26.5°.Type: ApplicationFiled: February 9, 2012Publication date: November 21, 2013Applicant: KOBELCO RESEARCH INSTITUTE, INC.Inventors: Moriyoshi Kanamaru, Yuki Iwasaki, Minoru Matsui, Hiroshi Goto, Akira Nambu
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Publication number: 20130294818Abstract: The glass-ceramic joining material, which is suitable for bonding or joining at low processing temperatures, especially less than 800° C., is composed of a BaO—SiO2—CaO—B2O3—Al2O3 system and has a coefficient of thermal expansion ?(20-300)?9.5·10?6 K?1.Type: ApplicationFiled: April 22, 2013Publication date: November 7, 2013Applicant: SCHOTT AGInventor: Dieter Goedeke
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Publication number: 20130285053Abstract: Disclosed is a sputtering target that can suppress the occurrence of anomalous discharge in the formation of an oxide semiconductor film by sputtering method and can continuously and stably form a film. Also disclosed is an oxide for a sputtering target that has a rare earth oxide C-type crystal structure and has a surface free from white spots (a poor appearance such as concaves and convexes formed on the surface of the sputtering target). Further disclosed is an oxide sintered compact that has a bixbyite structure and contains indium oxide, gallium oxide, and zinc oxide. The composition amounts (atomic %) of indium (In), gallium (Ga), and zinc (Zn) fall within a composition range satisfying the following formula: In/(In+Ga+Zn)<0.Type: ApplicationFiled: June 25, 2013Publication date: October 31, 2013Inventors: Hirokazu KAWASHIMA, Koki YANO, Futoshi UTSUNO, Kazuyoshi INOUE
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Publication number: 20130288879Abstract: Disclosed is a boron carbide-based ceramics material which has a high density and a high specific rigidity, but additionally with excellent processability, and a production method for the boron carbide-based ceramics material. Specifically, the high-rigidity ceramics material contains boron carbide in an amount of 90 to 99.5 mass %, wherein at least silicon, aluminum, oxygen and nitrogen coexist in a grain boundary phase between crystal grains of the boron carbide. This high-rigidity ceramics material can be produced by a method comprising: preparing a boron carbide powder, and, as a sintering aid, one or more selected from the group consisting of an oxide, a nitride and an oxynitride of silicon, an oxide, a nitride and an oxynitride of aluminum, and a composite oxide, a composite nitride and a composite oxynitride of aluminum and silicon, in such a manner as to contain all of Si, Al, O and N; and subjecting the boron carbide powder and the sintering aid to mixing, forming and sintering.Type: ApplicationFiled: November 4, 2011Publication date: October 31, 2013Applicant: KROSAKIHARIMA CORPORATIONInventors: Yutaka Sato, Hiroto Unno
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Patent number: 8563460Abstract: A catalyst unit is described comprising a cylinder with a length C and a diameter D, wherein said unit has five holes arranged in a pentagonal pattern extending longitudinally therethrough, with five flutes running along the length of the unit, said flutes positioned equidistant adjacent holes of said pentagonal pattern. The catalyst may be used particularly in steam reforming reactors.Type: GrantFiled: August 24, 2009Date of Patent: October 22, 2013Assignee: Johnson Matthey PLCInventors: David James Birdsall, Mileta Babovic, Mikael Per Uno Carlsson, Samuel Arthur French, Michiel Nijemeisland, William Maurice Sengelow, Edmund Hugh Stitt
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Patent number: 8557728Abstract: A catalyst unit is described in the form of a cylinder having a length C and diameter D, which has one or more holes extending therethrough, wherein said cylinder has domed ends of lengths A and B, such that (A+B+C)/D is in the range 0.50 to 2.00, and (A+B)/C is in the range 0.40 to 5.00. The catalyst or catalyst unit preferably has one or more flutes miming along its length. The catalyst may be used particularly in steam reforming reactors.Type: GrantFiled: August 24, 2009Date of Patent: October 15, 2013Assignee: Johnson Matthey PLCInventors: David James Birdsall, Mileta Babovic, Mikael Per Uno Carlsson, Samuel Arthur French, Michiel Nijemeisland, William Maurice Sengelow, Edmund Hugh Stitt
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Patent number: 8557729Abstract: A catalyst unit is described in the form of a cylinder having a length C and diameter D, which has two or more flutes running along its length, wherein said cylinder has domed ends of lengths A and B, such that (A+B+C)/D is in the range 0.50 to 2.00, and (A+B)/C is in the range 0.40 to 5.00. The catalyst may be used particularly in reactions where hydrogen is a reactant such as hydroprocessing, hydrogenation, water-gas shift reactions, methanation, hydrocarbon synthesis by the Fischer-Tropsch reaction, methanol synthesis and ammonia synthesis.Type: GrantFiled: August 24, 2009Date of Patent: October 15, 2013Assignee: Johnson Matthey PLCInventors: Daniel Lee Cairns, Mileta Babovic, Terence James Fitzpatrick, Elizabeth Margaret Holt, Colin William Park, William Maurice Sengelow, Edmund Hugh Stitt
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Publication number: 20130256297Abstract: The electrostatic chuck 10 includes a discoidal alumina ceramic substrate 12 and a heater electrode 14 and an electrostatic electrode 16 embedded in the alumina ceramic substrate 12. The top surface of the alumina ceramic substrate 12 is a wafer-mounting face 12a. The heater electrode 14 has a pattern, for example, of a single continuous line so as to realize electric wiring over the entire surface of the alumina ceramic substrate 12. Upon the application of a voltage, the heater electrode 14 generates heat and heats the wafer W. The heater electrode 14 is made of a complex oxide of titanium, aluminum, and magnesium (Ti—Al—Mg—O) dispersed in molybdenum.Type: ApplicationFiled: March 22, 2013Publication date: October 3, 2013Applicant: NGK INSULATORS, LTD.Inventors: Kazuhiro NOBORI, Takuji KIMURA, Reo WATANABE
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Publication number: 20130247863Abstract: A method for preparing ceramic powders in the presence of a carbon powder including a step which consists in homogenizing a mixture of particles capable of resulting in a ceramic by heat treatment. Said method can be carried out in the presence of an accelerated solvent and provides, at reduced energy consumption, carbon-coated ceramic powders and then ceramics.Type: ApplicationFiled: April 5, 2013Publication date: September 26, 2013Applicant: HYDRO-QUEBECInventors: KARIM ZAGHIB, ABDELBAST GUERFI, MICHEL ARMAND, PATRICK CHAREST
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Publication number: 20130213802Abstract: A sintered compact sputtering target is provided and contains Co and Cr as metal components and includes oxides dispersed in the structure formed of the metal components. The structure of the sputtering target has a region (A) containing Co oxides dispersed in Co and a region (D) containing Cr oxides in a periphery of the region (A). In addition a method of producing the above referenced sintered compact sputtering target is provided and includes the steps of mixing a powder prepared by pulverizing a sintered compact containing Co oxide dispersed in Co, a Co powder, and a Cr power and pressure-sintering the resulting powder mixture to provide a sputtering target.Type: ApplicationFiled: December 2, 2011Publication date: August 22, 2013Applicant: JX NIPPON MINING & METALS CORPORATIONInventors: Atsushi Sato, Yuichiro Nakamura
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Publication number: 20130207020Abstract: The present invention relates to a ceramic comprising (or consisting essentially of) a solid solution containing Bi, K, Ti and Fe (and optionally Pb) which exhibits piezoelectric behaviour.Type: ApplicationFiled: July 19, 2011Publication date: August 15, 2013Applicant: UNIVERSITY OF LEEDSInventors: Andrew John Bell, Timothy Comyn
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Publication number: 20130202850Abstract: A target for sputtering or a tablet for ion plating, which enables to attain high rate film-formation and a nodule-less, an oxide sintered body suitable for obtaining the same and a production method therefor, and a transparent conductive film having low absorption of blue light and low specific resistance, obtained by using the same. It is provided by an oxide sintered body having indium and gallium as an oxide, characterized in that an In2O3 phase with a bixbyite-type structure forms a major crystal phase, and a GaInO3 phase of a ?-Ga2O3-type structure, or GaInO3 phase and a (Ga,In)2O3 phase is finely dispersed therein, as a crystal grain having an average particle diameter of equal to or smaller than 5 ?m, and a content of gallium is equal to or higher than 10% by atom and below 35% by atom as atom number ratio of Ga/(In+Ga) or the like.Type: ApplicationFiled: March 15, 2013Publication date: August 8, 2013Applicant: SUMITOMO METAL MINING CO., LTD.Inventor: SUMITOMO METAL MINING CO., LTD.
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Patent number: 8496871Abstract: A silica structure includes mesoporous silica spheres; and connection portions each of which includes metal oxide, and each of which connects the mesoporous silica spheres to each other.Type: GrantFiled: February 4, 2010Date of Patent: July 30, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Narihito Tatsuda, Kazuhisa Yano, Takashi Sasajima, Daisaku Sawada, Eiichi Kamiyama
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Publication number: 20130181173Abstract: A sintered composite oxide 2 composed mainly of zinc, aluminum, titanium and oxygen, the atomic ratio of the elements satisfying the following equations (1) to (3), the sintered composite oxide 2 comprising particles having a hexagonal wurtzite structure containing zinc oxide as the major component and having a mean particle size of no greater than 20 ?m, and particles having a ZnTiO3-like structure and/or Zn2Ti3O8-like structure containing aluminum and titanium and having a mean particle size of no greater than 5 ?m, and containing no particles with a spinel oxide structure of zinc aluminate with zinc and aluminum in solid solution, and a manufacturing method for the same. (Al+Ti)/(Zn+Al+Ti)=0.004-0.055??(1) Al/(Zn+Al+Ti)=0.002-0.025??(2) Ti/(Zn+Al+Ti)=0.002-0.048??(3) [In the equations, Al, Ti and Zn represent the contents (atomic percents) of aluminum, titanium and zinc, respectively.Type: ApplicationFiled: September 27, 2011Publication date: July 18, 2013Applicant: TOSOH CORPORATIONInventors: Hideto Kuramochi, Hitoshi Iigusa, Tetsuo Shibutami
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Publication number: 20130174609Abstract: A disk roll includes a shaft, and a plurality of disks that are fitted to the shaft, the plurality of disks fitted having been fired, having a density of more than 1.20 g/cm3 and 1.50 g/cm3 or less, and including 20 to 50 wt % of ceramic wool, 5 to 30 wt % of kibushi clay, 2 to 20 wt % of bentonite, and 20 to 45 wt % of a filler, the filler being selected from mica, alumina, wollastonite, cordierite, and calcined kaolin.Type: ApplicationFiled: January 5, 2012Publication date: July 11, 2013Applicant: NICHIAS CORPORATIONInventors: Kazuhisa Watanabe, Tetsuya Mihara, Taichi Shiratori
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Publication number: 20130172175Abstract: Disclosed herein are photocatalyst powder and a production method thereof, and by having photocatalyst particles corn binded without reduction of a specific surface area, the reduction of the specific surface area is nearly none while the pores are developed, as well as the absorption rate with respect to light is superior, the method of producing photocatalyst powder includes forming initial photocatalyst powder by molding nanoparticles of photocatalyst substance into a certain shape through extrusion, and splitting the initial photocatalyst powder into a plurality of photocatalyst powder by injecting the initial photocatalyst powder into a predetermined splitting solution, the initial photocatalyst powder being split into the plurality of photocatalyst powder by the predetermined spliting solution.Type: ApplicationFiled: December 28, 2012Publication date: July 4, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventor: SAMSUNG ELECTRONICS CO., LTD.
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Patent number: 8475706Abstract: A method of making dielectric ceramics containing mixed metal oxides is provided. The method comprises the steps of at least partially coating a metal oxide powder with a metal hydroxide or metal oxide, compacting the coated powder with one or more additional metal compounds or metal compound precursors, and directly sintering the compact in a single step. The method of the invention may be used to avoid occurrence of significant quantities of one or more undesired but thermodynamically or kinetically favored side products. The method of the invention may also be used to synthesize perovskites, in particular lead-magnesium-niobium (PMN), lead-magnesium-niobium-lead-titanium (PMN-PT) perovskites, or lead zirconate titanate (PZT).Type: GrantFiled: May 4, 2010Date of Patent: July 2, 2013Assignee: Drexel UniversityInventors: Wei-Heng Shih, Huiming Gu, Wan Y. Shih
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Patent number: 8454885Abstract: The invention is a solution impregnation and drying treatment that imparts a high temperature binder into an already formed porous green body composed of particulate batch material. The batch material includes inorganic compounds and binder. The result is reduced sag and distortion and the same or increased strength when the porous body is later fused during sintering/firing.Type: GrantFiled: May 15, 2008Date of Patent: June 4, 2013Assignee: Corning IncorporatedInventors: Steven Bruce Dawes, Michael Thomas Gallagher, Keith Leonard House
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Patent number: 8454933Abstract: The invention provides a polycrystal magnesium oxide (MgO) sintered body which is capable of having a sintered density close to a theoretical density thereof. The MgO sintered body exhibits excellent mechanical properties and heat conductivity, while reducing contamination of an atmosphere due to gas generation. The invention also provides a production method for the sintered body. The polycrystal MgO sintered body has a unique crystalline anisotropy in which (111) faces are oriented along a surface applied with a uniaxial pressure at a high rate. The polycrystalline MgO sintered body is obtained by a method which includes the steps of: sintering an MgO raw material powder, having a particle size of 1 ?m or less, under a uniaxial pressure and then subjecting the sintered powder to a heat treatment under an atmosphere containing 0.05 volume % or more of oxygen, at a temperature of 1273 K or more for 1 minute or more.Type: GrantFiled: January 27, 2009Date of Patent: June 4, 2013Assignees: Nippon Tungsten Co., Ltd., Ube Material Industries, Ltd.Inventors: Mitsuyoshi Nagano, Masanobu Takasu, Yo Arita, Satoru Sano
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Publication number: 20130118774Abstract: A sputtering target which is composed of a sintered body of an oxide which contains at least indium, tin, and zinc and includes a spinel structure compound of Zn2SnO4 and a bixbyite structure compound of In2O3. A sputtering target includes indium, tin, zinc, and oxygen with only a peak ascribed to a bixbyite structure compound being substantially observed by X-ray diffraction (XRD).Type: ApplicationFiled: December 13, 2012Publication date: May 16, 2013Applicant: Idemitsu Kosan Co., Ltd.Inventor: Idemitsu Kosan Co., Ltd.
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Publication number: 20130115416Abstract: There is provided a ceramic member which is a sintered body containing enstatite and boron nitride as constituents, in which boron nitride is oriented in a single direction, a probe holder formed using the ceramic member, and a manufacturing method of the ceramic member. In the ceramic member, an index of orientation degree is not less than 0.8. In so doing, it is possible to provide a ceramic member which has a free machining property, a coefficient of thermal expansion which is close to that of silicon, and high strength, and a probe holder which is formed using the ceramic member, and a manufacturing method of the ceramic member.Type: ApplicationFiled: July 13, 2011Publication date: May 9, 2013Applicant: NHK SPRING CO., LTD.Inventors: Akira Nakamura, Kohei Suzuki, Shinya Miyaji, Shinji Saito
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Patent number: 8435327Abstract: A carbon dioxide permeable membrane is described. In some embodiments, the membrane includes a body having a first side and an opposite second side; a plurality of first regions formed from a molten carbonate having a temperature of about 400 degrees Celsius to about 1200 degrees Celsius, the plurality of first regions forming a portion of the body and the plurality of first regions extending from the first side of the body to the second side of the body; a plurality of second regions formed from an oxygen conductive solid oxide, the plurality of second regions combining with the plurality of first regions to form the body and the plurality of second regions extending from the first side of the body to the second side of the body; and the body is configured to allow carbon dioxide to pass from the first side to the second side.Type: GrantFiled: April 23, 2012Date of Patent: May 7, 2013Assignee: The Trustees of Columbia University in the City of New YorkInventors: Klaus S. Lackner, Alan C. West, Jennifer L. Wade
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Patent number: 8431287Abstract: In a solid electrolyte obtained by sintering a powder, high ionic conductivity and remarkably low moisture permeation applicable to a lithium ion secondary battery or a lithium primary battery are realized. A method for producing a solid electrolyte including the steps of preparing a green sheet containing a lithium ion conductive inorganic material powder; and firing the green sheet, wherein in the step of firing the green sheet, at least one surface of the green sheet is covered by a setter having a porosity of not more than 10% by volume, is disclosed.Type: GrantFiled: September 22, 2008Date of Patent: April 30, 2013Assignee: Ohara Inc.Inventor: Jun Teramoto
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Patent number: 8425809Abstract: A method of forming granules, the method including forming a suspension of a nanopowder such as a nano zirconia powder containing yttria. The powder is formed from a suspension, and freon is added directly to the suspension as an additive. The suspension is then granulated by spray freeze drying, and the freon subsequently removed by heat treatment. The voids left by the vacated freon provide meso, micro and macro flaws or structural defects in the granules.Type: GrantFiled: October 14, 2009Date of Patent: April 23, 2013Assignee: Loughborough UniversityInventors: Annapoorani Ketharam, Balasubramaniam Vaidhyanathan, Bala Praveen Chakkravarthy Raghupathy, Jonathan Graham Peel Binner
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Patent number: 8415268Abstract: A process for producing a ringlike oxidic shaped body by mechanically compacting a pulverulent aggregate introduced into the fill chamber of a die, wherein the outer face of the resulting compact corresponds to that of a frustocone.Type: GrantFiled: June 30, 2009Date of Patent: April 9, 2013Assignee: BASF SEInventors: Knut Eger, Jens Uwe Faust, Holger Borchert, Ralf Streibert, Klaus Joachim Mueller-Engel, Andreas Raichle
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Publication number: 20130065067Abstract: Provided is a process for producing a ceramic for a heat-radiating member. The process includes providing as a raw material an alumina powder having an alumina (Al2O3) content of at least 99.5 mass % and an average particle size of from 0.2 to 1 ?m, and granulating the powder into a granular form ranging from 50 to 100 ?m, pressing the raw material which has been obtained in the granulation step and which includes granular alumina, and heating a green compact in an air atmosphere at a firing temperature of from 1,480 to 1,600° C. to obtain a sintered body. Also provided is a process for producing a ceramic for a heat-radiating member, the ceramic being a sintered alumina body which has high thermal conductivity, efficient heat dissipation, excellent mechanical strength and thermal shock resistance and which is usable for cooling applications at heat generating areas of electronic devices and equipment.Type: ApplicationFiled: May 30, 2011Publication date: March 14, 2013Inventors: Takeo Nishimura, Nobuyuki Ishida
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Publication number: 20130059153Abstract: A nanoparticle containing monoclinic lutetium oxide. A method of: dispersing a lutetium salt solution in a stream of oxygen gas to form droplets, and combusting the droplets to form nanoparticles containing lutetium oxide. The combustion occurs at a temperature sufficient to form monoclinic lutetium oxide in the nanoparticles.Type: ApplicationFiled: August 15, 2012Publication date: March 7, 2013Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Colin C. Baker, Woohong Kim, Guillermo R. Villalobos, Jasbinder S. Sanghera, Ishwar D. Aggarwal
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Publication number: 20130059071Abstract: Components of semiconductor processing apparatus are formed at least partially of erosion, corrosion and/or corrosion-erosion resistant ceramic materials. Exemplary ceramic materials can include at least one oxide, nitride, boride, carbide and/or fluoride of hafnium, strontium, lanthanum oxide and/or dysprosium. The ceramic materials can be applied as coatings over substrates to form composite components, or formed into monolithic bodies. The coatings can protect substrates from physical and/or chemical attack. The ceramic materials can be used to form plasma exposed components of semiconductor processing apparatus to provide extended service lives.Type: ApplicationFiled: November 2, 2012Publication date: March 7, 2013Applicant: LAM RESEARCH CORPORATIONInventor: LAM RESEARCH CORPORATION
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Publication number: 20130043430Abstract: A polycrystalline scintillator for detecting soft X-rays, which comprises Ce as a light-emitting element and at least Y, Gd, Al, Ga and O, and has a garnet crystal structure, and a composition represented by the general formula of (Y1?x?zGdxCez)3+a(Al1?uGau)5?aO12, wherein 0?a?0.1, 0.15?x?0.3, 0.002?z?0.015, and 0.35?u?0.55, with 0.05-1 ppm by mass of Fe and 0.5-10 ppm by mass of Si by outer percentage, a ratio ?50/?100 of 3 or more, wherein ?50 is an absorption coefficient of X-rays at 50 keV, and ?100 is an absorption coefficient of X-rays at 100 keV, and afterglow of 800 ppm or less after 3 ms from the termination of X-ray irradiation.Type: ApplicationFiled: October 25, 2011Publication date: February 21, 2013Applicant: HITACHI METALS, LTD.Inventors: Ryouhei Nakamura, Kenya Tanaka, Shunsuke Ueda
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Publication number: 20130023401Abstract: Initially, an Yb2O3 raw material was subjected to uniaxial pressure forming at a pressure of 200 kgf/cm2, so that a disc-shaped compact having a diameter of about 35 mm and a thickness of about 10 mm was produced, and was stored into a graphite mold for firing. Subsequently, firing was performed by using a hot-press method at a predetermined firing temperature (1,500° C.), so as to obtain a corrosion-resistant member for semiconductor manufacturing apparatus. The press pressure during firing was specified to be 200 kgf/cm2 and an Ar atmosphere was kept until the firing was finished. The retention time at the firing temperature (maximum temperature) was specified to be 4 hours. In this manner, the corrosion-resistant member for semiconductor manufacturing apparatus made from an Yb2O3 sintered body having an open porosity of 0.2% was obtained.Type: ApplicationFiled: September 21, 2012Publication date: January 24, 2013Applicant: NGK INSULATORS, LTD.Inventor: NGK INSULATORS, LTD.
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Patent number: 8354055Abstract: The present invention relates to extrudable ceramic masses and other masses which set as a result of baking or sintering, which masses comprise specific additives based on water-soluble cellulose ethers, an extrusion process, the extrudates and their use.Type: GrantFiled: November 27, 2007Date of Patent: January 15, 2013Inventors: Roland Bayer, Matthias Knarr
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Patent number: 8349758Abstract: A catalyst with large surface area structure, in particular for steam-reforming catalysts, which is characterized in that the large surface area structure is formed of a large number of round or parallel penetrating holes of polygonal cross-section, wherein the catalyst carrier is prepared in the injection molding process, coated with a washcoat and then impregnated with the active component. The catalyst carrier includes at least one sinterable material and has a lateral pressure resistance of at least 700 N. Also, a process for the preparation of such catalysts and the use thereof in a reactor.Type: GrantFiled: September 25, 2008Date of Patent: January 8, 2013Assignee: Sud-Chemie AGInventors: Wolfgang Gabriel, Ingo Hanke
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Patent number: 8343415Abstract: Processes for forming ceramic particulate material. The ceramic particulate material includes alumina particles, the particles having a specific surface area (SSA) not less than 15 m2/g and not greater than 75 m2/g and a sphericity quantified by at least one of (i) a mean roundness not less than 0.710 as measured by Roundness Correlation Image Analysis, and (ii) a concavity less than 20%, wherein concavity is the percent of alumina particles based on a sample of at least 100 particles, which have a concave outer peripheral portion that extends along a distance not less than 10% of d50 by TEM inspection, the concave outer peripheral portion having a negative radius of curvature as viewed from an interior of the particle.Type: GrantFiled: February 27, 2012Date of Patent: January 1, 2013Assignee: Saint-Gobain Ceramics & Plastics, Inc.Inventors: Ralph Bauer, Andrew G. Haerle, Doruk O. Yener, Claire M. Theron, Michael D. Kavanaugh
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Passive optoceramics with cubic crystal structure, process for manufacturing the same and their uses
Patent number: 8343884Abstract: The optoceramics are transparent to visible light and/or infrared radiation. The optoceramics each consist of a crystal matrix, i.e. of polycrystalline material, wherein at least 95% by weight, preferably at least 98% by weight, of the single crystallites have a cubic pyrochlore or a fluorite structure. Refractive, transmissive or diffractive optical elements made with the optoceramics, their uses and an optical imaging system comprising at least one of the optical elements are also disclosed. Methods of manufacturing the optoceramics are described.Type: GrantFiled: March 22, 2010Date of Patent: January 1, 2013Assignee: Schott AGInventors: Yvonne Menke, Ulrich Peuchert, Akio Ikesue -
Publication number: 20120326361Abstract: The invention relates to a granulated powder intended, in particular, for the production of ceramic sintered parts, said powder having the following chemical weight composition, based on dry matter, namely: a zirconia stabiliser selected from the group containing Y2O3, Sc2O3, MgO, CaO, CeO2, and mixtures thereof, the weight content of stabiliser, based on the total zirconia and stabiliser content, being between 2% and 20% and the MgO+CaO content being less than 5% based on the total zirconia and stabiliser content; at least 1% of a first binder having a glass transition temperature less than or equal to 25° C.; 0-4% of an additional binder having a glass transition temperature greater than 25° C.; 5-50% alumina; 0-4% of a temporary additive different from the first binder and the additional binder, the total content of the first binder, the additional binder and the temporary additive being less than 9%; less than 2% impurities; and ZrO2 to make up 100%.Type: ApplicationFiled: December 21, 2010Publication date: December 27, 2012Applicant: Saint-Gobian Centre De Recherches Et D'Etudes EuropeenInventors: Henri Bocciarelli, Nabil Nahas
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Publication number: 20120324954Abstract: A reactive-ceramming process for making YPO4 ceramics involving the reaction between a YP-glass and a Y-source material. The invention can be used to synthesize, inter alia, phase-pure YPO4 ceramic material 5 at a relatively low temperature in a relatively short period of time and at a low cost. Invention can be used to make large piece of YPO4 blocks suitable for, e.g., an isopipe in a fusion down-draw process for making large-size glass sheets.Type: ApplicationFiled: February 25, 2011Publication date: December 27, 2012Inventors: Lisa Ann Lamberson, Robert Michael Morena
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Patent number: 8338322Abstract: A method for forming a transparent ceramic preform in one embodiment includes forming a suspension of oxide particles in a solvent, wherein the suspension includes a dispersant, with the proviso that the suspension does not include a gelling agent; and uniformly curing the suspension for forming a preform of gelled suspension. A method according to another embodiment includes creating a mixture of inorganic particles, a solvent and a dispersant, the inorganic particles having a mean diameter of less than about 2000 nm; agitating the mixture; adding the mixture to a mold; and curing the mixture in the mold for gelling the mixture, with the proviso that no gelling agent is added to the mixture.Type: GrantFiled: August 30, 2011Date of Patent: December 25, 2012Assignee: Lawrence Livermore National Security, LLCInventors: Joel P. Hollingsworth, Joshua D. Kuntz, Zachary M. Seeley, Thomas F. Soules
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Publication number: 20120318132Abstract: According to the present invention, a ceramic composite material may be formed by a method comprising the steps preparing a solid solution comprising aluminium oxide, a second component comprising a cation in a first valent state, and a dopant, wherein the dopant is present in an amount of not more than 1000 ppm by weight of the solid solution; and carrying out a treatment on the solid solution to form the ceramic composite material, wherein the treatment changes the valent state of said cation to a second valent state, forming a ceramic composite material comprising grains containing aluminium oxide and a precipitate of particles comprising the cation in the second valent state. The materials may be useful in the manufacture of various products, including wear resistant products and armour.Type: ApplicationFiled: November 17, 2010Publication date: December 20, 2012Applicant: ISIS INNOVATION LIMITEDInventors: Richard Ian Todd, Amartya Mukhopadhyay
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Publication number: 20120311985Abstract: The present invention is a process for producing an aluminum titanate-based ceramics comprising a step of firing a starting material mixture containing a titanium source powder, an aluminum source powder, and a copper source.Type: ApplicationFiled: December 24, 2010Publication date: December 13, 2012Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Kentaro Iwasaki, Tetsuro Tohma
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Patent number: 8329090Abstract: According to one embodiment, a method for forming a composite transparent ceramic preform includes forming a first suspension of oxide particles in a first solvent which includes a first dispersant but does not include a gelling agent, adding the first suspension to a first mold of a desired shape, and uniformly curing the first suspension in the first mold until stable. The method also includes forming a second suspension of oxide particles in a second solvent which includes a second dispersant but does not include a gelling agent, adding the second suspension to the stable first suspension in a second mold of a desired shape encompassing the first suspension and the second suspension, and uniformly curing the second suspension in the second mold until stable. Other methods for forming a composite transparent ceramic preform are also described according to several other embodiments. Structures are also disclosed.Type: GrantFiled: October 21, 2009Date of Patent: December 11, 2012Assignee: Lawrence Livermore National Security, LLCInventors: Joel P. Hollingsworth, Joshua D. Kuntz, Thomas F. Soules, Richard L. Landingham
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Publication number: 20120309609Abstract: The present disclosure relates to a composite material comprising a ceramic component having a negative coefficient of thermal expansion, and oxidic ceramic particles, to its obtainment process and to its uses in microelectronics, precision optics, aeronautics and aerospace.Type: ApplicationFiled: December 20, 2010Publication date: December 6, 2012Inventors: Ramon Torrecillas San Millan, Olga Garcia Moreno, Adolfo Fernandez Valdes