Abstract: Disclosed is a sputtering target having a good appearance, which is free from white spots on the surface. The sputtering target is characterized by being composed of an oxide sintered body containing two or more kinds of homologous crystal structures.

Abstract: A firing aid, in particular for supporting material to be fired in a furnace during filing, is obtainable by a method including the following steps: a) providing a mixture of at least 60% by weight mullite powder which comprises 74.0 to 78.0% by weight Al2O3, 22.0 to 26% by weight SiO2 and a maximum of 0.5% contaminants, with the sum of the Al2O3 content and of the SiO2 content amounting to at least 99.5% by weight; 1 to 20% by weight binder; 0 to 20% by weight plasticizer; and remainder to 100% by weight of one or more additives; b) pressing the mixture provided in step a) to a green body; and c) sintering the green body.

Abstract: Systems and methods for treating a fluid with a body are disclosed. Various aspects involve treating a fluid with a porous body. In select embodiments, a body comprises ash particles, and the ash particles used to form the body may be selected based on their providing one or more desired properties for a given treatment. Various bodies provide for the reaction and/or removal of a substance in a fluid, often using a porous body comprised of ash particles. Computer-operable methods for matching a source material to an application are disclosed. Certain aspects feature a porous body comprised of ash particles, the ash particles have a particle size distribution and interparticle connectivity that creates a plurality of pores having a pore size distribution and pore connectivity, and the pore size distribution and pore connectivity are such that a first fluid may substantially penetrate the pores.

Abstract: The invention relates to a mixture of fused grains mainly comprising or composed of an oxide phase of pseudo-brookite type and comprising titanium, aluminum and magnesium, said fused grains having the following chemical composition, in weight percentages on the basis of the oxides: less than 55% of Al2O3; more than 30% and less than 70% of TiO2; more than 1% and less than 15% of MgO, said fused grains also corresponding to the following composition, in molar percentages and on the basis of the single oxides Al2O3, TiO2, MgO: 180?3t+a?220, a?50, m=100?a?t, in which: a is the molar percentage of Al2O3; t is the molar percentage of TiO2; m is the molar percentage of MgO. The invention also relates to a ceramic product obtained from such fused grains.

Abstract: 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.

Abstract: A sintered complex oxide comprising metal oxide particles (a) having a hexagonal lamellar structure and containing zinc oxide and indium, and metal oxide particles (b) having a spinel structure and containing a metal element M (where M is aluminum and/or gallium), wherein the mean value of the long diameter of the metal oxide particles (a) is no greater than 10 ?m, and at least 20% of the metal oxide particles (a) have an aspect ratio (long diameter/short diameter) of 2 or greater, based on the number of particles.

Abstract: The invention provides a process for producing a shaped body of aluminum titanate-based ceramic such as aluminum titanate or aluminum magnesium titanate having smaller shrinkage ratio relative to a shaped body of a starting material mixture, and having a smaller 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 material and an aluminum source material, wherein the BET specific surface area of the aluminum source material is 0.1 m2/g or more and 5 m2/g or less.

Abstract: A method of fabrication of a transparent ceramic using nanoparticles synthesized via flame spray pyrolysis includes providing metal salts, dissolving said metal salts to form organic precursors in solution, aerosolizing said solution, oxidizing said aerosol in a flame, yielding oxide nano-particles, forming said oxide nano-particles into a green body, and sintering said green body to produce the transparent ceramic. Fabrication of transparent ceramic scintillators by this route that offer performance similar to that of single crystal scintillators has been demonstrated.

Abstract: To provide a rolling bearing which is superior in preventing electrolytic corrosion, suitable for use in applications where torque reduction of the bearing is required by reducing an amount of lubricant used or by using a lubricant having a low viscosity, and has superior acoustic characteristics and durability, a rolling element according to the present invention is made of an alumina-zirconia composite material including an alumina component and either a zirconia component or a yttria-zirconia component containing 1.5 to 5 mol % of yttria, a mass ratio of the alumina component to the zirconia component or the yttria-zirconia component being 5:95 to 50:50.

Abstract: A porous ceramic substrate includes a first phase of microcracked cordierite ceramic material and a second phase of non-cordierite metal oxide particles dispersed in the cordierite ceramic, wherein at least a portion of the interface between the first and second phases is wetted by glass and the particles of the second phase have a size in the range of from about 0.1 to about 10 ?m.

Abstract: A hydrogen permeable membrane is disclosed. The membrane is prepared by forming a mixture of metal oxide powder and ceramic oxide powder and a pore former into an article. The article is dried at elevated temperatures and then sintered in a reducing atmosphere to provide a dense hydrogen permeable portion near the surface of the sintered mixture. The dense hydrogen permeable portion has a higher initial concentration of metal than the remainder of the sintered mixture and is present in the range of from about 20 to about 80 percent by volume of the dense hydrogen permeable portion.

Abstract: A sputtering target including indium, tin, zinc and oxygen, and including a hexagonal layered compound, a spinel structure compound and a bixbyite structure compound.

Abstract: Provided is a method of manufacturing a powder injection-molded body, the method including: mixing at least titanium hydrogen compound (TiHx) powder and a binder to prepare a molding mixture; powder-injecting the molding mixture to form a molded product; degreasing the molded product; and sintering the degreased molded product, wherein in the titanium hydrogen compound, the ratio of hydrogen(H) to titanium(Ti) is greater than 0.45 and less than 1.98. Accordingly, during the degreasing process or the sintering process, the titanium hydrogen compound is decomposed into titanium and hydrogen and the hydrogen reacts with oxygen, carbon, and nitrogen, thereby significantly decreasing production rates of impurities in the sintered product. In addition, during the degreasing process, hydrogen is less released from the titanium hydrogen compound, and then, explosion possibility due to the generated hydrogen can be significantly decreased.

Abstract: A lanthanum oxide-based sintered compact having lanthanum oxide as a basic component, wherein the sintered compact contains one or more of titanium oxide, zirconium oxide and hafnium oxide with the remainder being lanthanum oxide and unavoidable impurities. A method of producing a lanthanum oxide-based sintered compact, wherein La2(CO3)3 powder or La2O3 powder as lanthanum oxide raw material powder and one or more of TiO2, ZrO2 and HfO2 powders as an additive oxide are used, blending and mixing are performed so that the composition ratio of metal components of the additive oxide becomes a predetermined value based on the metal conversion, the mixed powder is thereafter heated and synthesized in the atmosphere, the synthesized material is subsequently pulverized to obtain powder, and the synthesized powder is thereafter hot pressed into a sintered compact.

Abstract: 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.

Abstract: Disclosed are an indium Tin Oxide (ITO) target, a method for manufacturing the same, a transparent conductive film of ITO, and a method for manufacturing the transparent conductive film of ITO. The ITO target includes at least one oxide selected from the group consisting of Sm2O3 and Yb2O3, wherein an amount of the oxide is about 0.5 wt. % to about 10 wt. % based on the weight of the target.

Abstract: 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.

Abstract: A high energy density multilayer ceramic capacitor, having at least two electrode layers and at least one substantially dense polycrystalline dielectric layer positioned therebetween. The at polycrystalline dielectric layer has an average grain size of less than about 300 nanometers, a particle size distribution of between about 150 nanometers and about 3 micrometers, and a maximum porosity of about 1 percent. The dielectric layer is selected from the group including TiO2, BaTiO3, Al2O3, ZrO2, lead zirconium titanate, and combinations thereof and has a breakdown strength of at least about 1100 kV per centimeter.

Abstract: Disclosed is a production method of a sintered body. The production method of a sintered body comprises a step of sintering, at a temperature within the range of from 900° C. to 1200° C., a mixture of a manganese-based oxide and copper oxide wherein the ratio of the molar amount of copper to one mol of manganese in the mixture is in the range of from 0.001 to 0.05.

Abstract: The present invention relates to lithium manganate particles having a primary particle diameter of 1 to 8 ?m and forming substantially single-phase particles, which have a composition represented by the following chemical formula: Li1+xMn2?x?yY1yO4+Y2 in which Y1 is at least one element selected from the group consisting of Ni, Co, Mg, Fe, Al, Cr and Ti; Y2 is P and is present in an amount of 0.01 to 0.6 mol % based on Mn; and x and y satisfy 0.03?x?0.15 and 0.05?y?0.20, respectively, and which lithium manganate particles have a specific surface area of the lithium manganate particles of 0.3 to 0.9 m2/g (as measured by BET method); and have an average particle diameter (D50) of the lithium manganate particles of 3 to 10 ?m. A positive electrode active substance of a lithium ion secondary battery using the lithium manganate particles of the present invention has a high output and is excellent in high-temperature stability.

Abstract: Among the methods described herein are methods of making a low-specific gravity particulate including the steps of: (a) providing combustion products of carbonaceous materials comprising silica and an aluminum oxide, (b) mixing the combustion products with a binder to create a pelletizable mixture; (c) pelletizing the combustion products of carbonaceous materials to create a pellet, and (d) sintering the combustion products of carbonaceous materials to create a particulate comprising silica and an aluminum oxide in an amount of about 0.1% to about 25% by weight and having at least one void, a specific gravity of less than about 2.2, a particle size of 8 U.S. Mesh or smaller, and a substantially spherical shape.

Abstract: A method for preparing a high-temperature heat-resistant composite material by combining a mixture of submicron alumina powder and submicron silica powder, wherein the ratio of alumina to silica is from about 4:1 to about 5:1, submicron Group II metal oxide powder, and a Group I metal silicate solution to form a slurry, wherein the weight of the Group II metal oxide powder is an amount corresponding to about 5% to about 10% of the weight of the silicate solution; contacting reinforcing high-temperature resistant fibers with the slurry to form a composite precursor composition; and curing the composition at a temperature sufficient to produce the high-temperature heat-resistant composite material capable of resisting temperatures up to about 1400° C. Composite materials prepared according to the method and articles incorporating the material are also presented.

Abstract: An alumina sintered article comprising 99.3 mass % or more Al in terms of Al2O3, strontium and silicon is disclosed. The alumina sintered article also comprises alumina crystal grains and an oxide crystal comprising aluminum, silicon, strontium located at a triple pocket surrounded by three or more alumina crystal grains. The alumina sintered article improves dielectric loss in the megahertz to gigahertz bands while maintaining corrosion resistance, mechanical properties of alumina.

Abstract: Provided is a sintered oxide compact target for sputtering comprising indium (In), gallium (Ga), zinc (Zn), oxygen (O) and unavoidable impurities, wherein the composition ratio of the respective elements satisfies the Formula of InxGayZnzOa {wherein 0.2?x/(x+y)?0.8, 0.1?z/(x+y+z)?0.5, a=(3/2)x+(3/2)y+z}, and the number of ZnGa2O4 spinel phases having an average grain size of 3 ?m or larger existing in a 90 ?m×90 ?m area range of the sintered oxide compact target is 10 or less. With this sintered oxide compact target for sputtering comprising In, Ga, Zn, O and unavoidable impurities, the structure of the sintered compact target is improved, the formation of a phase to become the source of nodules is minimized, and the bulk resistance value is reduced. Whereby provided is a high density IGZO target capable of inhibiting abnormal discharge and which can be used in DC sputtering.

Abstract: The invention is for obtaining aluminium titanate-based ceramics having a small BET specific surface area and having, when ground into powder, a small pore volume, by effective utilization of particulate aluminium titanate-based ceramics. A pre-mixture prepared by mixing a particulate aluminium titanate-based ceramics with a titania source and an alumina source and optionally further with a magnesia source and a silica source, or particulates of aluminium titanate-based ceramics is, as such or preferably after shaped, fired as the powder or as the molded body to produce an aluminium titanate-based ceramics.

Abstract: A method for production of ceramic slabs comprising a mixture of atomised ceramic powders and a mixture of alpha hematites.

Abstract: The present invention relates to methods for manufacturing of fully densified nanocrystalline metal oxide ceramic materials at low sintering temperature. Methods of the invention involve dry compaction of a product resulting from hydrothermal treatment of metal ion suspensions and subsequent sintering. The present invention may produce ceramic bodies that exhibit nanocrystalline structural features with measured densities that are found to be extremely similar to the theoretical density.

Abstract: An alumina porous body has a porosity of 15 to 45% and an average pore size of 2 to 15 ?m includes 5 to 30 mass % of titanium oxide and at least one element selected from the group consisting of copper, manganese, calcium, and strontium, the total content of oxides of the at least one element being 1.5 mass % or less.

Abstract: A method for manufacturing an indium tin oxide (ITO) target and methods for preparing indium oxide powder (In2O3) and tin oxide powder (SnO2). The method for manufacturing an ITO (indium tin oxide) target includes preparing an In2O3 powder having a surface area of about 10-18 m2/g and an average particle diameter of between about 40 to 80 nm; preparing a SnO2 powder having a surface area of about 8-15 m2/g and an average particle diameter of about 60-100 nm; molding a mixture of the In2O3 powder and the SnO2 powder; and sintering the mixture at atmospheric pressure under oxidation atmosphere. The ITO target is applicable for a high-quality, transparent electrode for a display, such as a liquid crystal display, electroluminescent display, or field emission display.

Abstract: An alumina sintered body comprises alumina crystals as a main phase and a grain boundary phase made up of crystalline Y2Si2O7 and amorphous SiO2 at grain boundaries of the alumina crystals wherein when the alumina sintered body is taken as 100 wt %, the high melting phase is present in the range of from 0.1 wt % to 15 wt %. There is also provided a method for preparing the alumina sintered body, which method comprising a first mixing step P1 of mixing, at least, a yttria powder having an average particle size of 60 to 100 nm and a silica powder having a given average particle size to provide a mixed slurry and a second mixing step of further mixing an alumina powder having an average particle size of 0.5 to 1.0 ?m in the mixed slurry.

Abstract: A catalyst body which includes ceria:zirconia and a metal-zeolite, and is substantially free, or free, of tungsten or tungsten compounds, and methods of manufacture. The ceria and zirconia are present with a zirconia/ceria mole ratio of less than or equal to 1.0. The catalyst body is especially useful in NOx reduction applications.

Abstract: 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).

Abstract: Disclosed is a highly functional low-cost metal complex oxide having low resistivity and excellent high-temperature stability, which places only little burden on the environment. Specifically, a metal complex oxide is produced by a method which is characterized by comprising a calcination step for obtaining a calcine containing a metal complex oxide, a cleaning step for cleaning the calcine with purified water, and a firing step for firing the cleaned calcine. Preferably, the calcine is cleaned with purified water a plurality of times for obtaining a sintered body having less structural defects. Since a perovskite oxide produced by this method has a low resistivity and a high output factor, it can be used as a thermoelectric material.

Abstract: A scintillator having a host lattice of MgAl2O4 was prepared by hot pressing under a vacuum environment a powder mixture of MgAl2O4, CeO2, and LiF.

Abstract: Inorganic materials doped with biocidal metals are useful for medical devices such as prosthetic implants, heart valves, surgical tools, endoscopes, orthodontics appliances and the like.

Abstract: An insulating magnetic metal particle includes a magnetic metal particle containing at least one metal selected from the group consisting of Co, Fe, and Ni and having a diameter of 5 to 500 nm, a first inorganic insulating layer made of an oxide that covers the surface of the magnetic metal particle, and a second inorganic insulating layer made of an oxide that produces a eutectic crystal by reacting together with the first inorganic insulating layer at the time of heating them, the second inorganic insulating layer being coated on the first inorganic insulating layer. A thickness ratio of the second inorganic insulating layer with respect to the first inorganic insulating layer is set so that the first inorganic insulating layer remains on the surface of the magnetic metal particle after producing the eutectic crystal.

Abstract: (1) A niobium monoxide powder for a capacitor represented by formula: NbOx (x=0.8 to 1.2) and optionally containing other elements in an amount of 50 to 200,000 ppm, having a tapping density of 0.5 to 2.5 g/ml, an average particle size of 10 to 1000 ?m, angle of repose from 10° to 60°, the BET specific surface area from 0.5 to 40 m2/g and a plurality of pore diameter peak tops in the pore distribution, and a producing method thereof; (2) a niobium monoxide sintered body, which is obtained by sintering the above niobium monoxide powder and, having a plurality of pore diameter peak tops in a range of 0.01 ?m to 500 ?m, preferably, the peak tops of two peaks among the plurality of pore diameter peak tops having a highest relative intensity are present in the range of 0.2 to 0.7 ?m and in the range of 0.7 to 3 ?m, respectively, and a producing method thereof; (3) a capacitor using the above sintered body and a producing method thereof; and (4) an electronic circuit and electronic device using the above capacitor.

Abstract: In one aspect, the invention includes a heat stable, formed ceramic component that includes a multimodal grain distribution including (i) at least 50 wt % of coarse grains including stabilized zirconia, the coarse grains comprising a D50 grain size in the range of from 5 to 800 ?m, based upon the total weight of the component; and (ii) at least 1 wt % of fine grains comprising a D50 average grain size not greater than one-fourth the D50 grain size of the coarse grain, dispersed within the coarse grains, based upon the total weight of the component; wherein after sintering, the component has porosity at ambient temperature in the range of from 5 to 45 vol. %, based on the formed volume of the component.

Abstract: A ceramic sheet 20 is produced by a method in which inorganic particles including, as a main component, an oxide represented by general formula ABO3 and containing a volatile component are mixed such that the A/B ratio is 1.05 or more, the inorganic particles are formed into a self-supported planar shaped body with a thickness of 30 ?m or less, and the shaped body is fired, without an inactive layer or with an inactive layer which does not substantially react with the shaped body and is disposed adjacent to the shaped body, at a temperature-rising rate of 30° C./min or more in a temperature range which is equal to or higher than a temperature at which the volatile component is volatilized.

Abstract: A corrosion-resistant member includes a ceramic member containing yttrium oxide as a main component, containing cerium element, and obtained by firing under a nonoxidizing atmosphere. The corrosion-resistant member that has high corrosion-resistant characteristics and includes a ceramic member having a low volume resitivity can be provided.

Abstract: A method for manufacturing a dental restoration, including: determining an external form and dimensions available for a completed restoration; obtaining an image of a natural tooth to be replaced with the restoration or a tooth corresponding therewith, wherein the image comprises at least the external surface visible in use of the to be replaced or corresponding tooth, with variations in the appearance therein; defining locally on and at least to visible depth below the surface of appearance-determining properties of at least one material to be applied for the restoration in accordance with the obtained image and the variations in the appearance therein; constructing the restoration, including the steps of: providing at least one material to be applied in non-cohesive form; and providing cohesion to the material in accordance with the available form and dimensions.

Abstract: The present invention relates to a lead-free, non-toxic and arc resistant composite material having a thermosetting polymer, at least one heavy particulate filler, at least one light particulate filler and, optionally, at least one arc resistant filler. The composite material may be utilized in manufacturing articles used in radiation shielding and other applications where arc resistant and dielectric strength are desired.

Abstract: A stack of substantially parallel ceramic plates (22) separated and interconnected by ceramic spacers (26, 27) forming a seal structure (20) with a length (L), a width (W), and a thickness (T). The spacers are narrower in width than the plates, and may be laterally offset from spacers in adjacent rows to form a space (28) in a row that aligns with a spacer in another adjacent row. An adjacent plate bends into the space when the seal structure is compressed in thickness. The spacers may have gaps (60, 62) forming a stepped or labyrinthine cooling flow path (66) within the seal structure. The spacers of each row may vary in lateral separation, thus providing a range of compressibility that varies along the width of the seal structure.

Abstract: A hydrogen permeable membrane is disclosed. The membrane is prepared by forming a mixture of metal oxide powder and ceramic oxide powder and a pore former into an article. The article is dried at elevated temperatures and then sintered in a reducing atmosphere to provide a dense hydrogen permeable portion near the surface of the sintered mixture. The dense hydrogen permeable portion has a higher initial concentration of metal than the remainder of the sintered mixture and is present in the range of from about 20 to about 80 percent by volume of the dense hydrogen permeable portion.

Abstract: A composite material consisting essentially of ZrSiO4 and sintering additives selected from Type I, Type II and Type III sintering additives and combinations thereof in amounts indicated below: Type I: 0.0-0.1 wt % selected from Fe2O3, SnO2, oxide glasses, and mixtures and combinations thereof Type II: 0.1-0.8 wt % selected from TiO2, SiO2, VO2, CoO, NiO, NbO, and mixtures and combinations thereof Type III: 0.0-0.8 wt % selected from Y2O3, ZrO2, CaO, MgO, Cr2O3, Al2O3, and mixtures and combinations thereof wherein the amount of sintering additives are weight percentages on an oxide basis of the total weight of the composition, as well as method for making such composite material. The present invention is particularly useful for making large-size refractory bodies resistant to creep at an elevated operating temperature, such as an isopipe for fusion draw glass making processes.

Abstract: Methods for producing substantially round, spherical and sintered particles from a slurry of a calcined, uncalcined or partially calcined raw material having an alumina content of more than 55% by weight, and a mullite growth promoter in an amount of from about 2 to about 10% dry weight of the total solids in the slurry. Methods for using such substantially round, spherical and sintered particles in hydraulic fracturing operations.

Abstract: This invention pertains to product and process. The product is a transparent product of a density in excess 99.5% comprising spinel and having uniform mechanical properties. The process pertains to fabrication of a transparent spinel product comprising the steps of dissolving a sintering aid in water to form a neutral sintering aid solution, adding a suitable additive to the sintering aid solution, applying the sintering aid solution to spinel particles to form a spinel dispersion, sub-dividing or atomizing the spinel dispersion to form droplets comprising one or more spinel particles coated with the final spinel solution, drying the droplets to form dried coated particles comprising one or more spinel particles coated with a dried layer of the sintering aid, and densifying the dried coated particles to form a transparent spinel product having, uniform optical and mechanical properties in absence of grains of exaggerated size.

Abstract: The present invention provides a method for manufacturing a calcined gypsum wherein the mixing water amount is reduced and the setting time does not increase. As a raw gypsum is compounded with a carboxylic acid-type material and calcined, a calcined gypsum can be manufactured wherein the mixing water amount is small and the setting time does not increase. Furthermore, a regular gypsum board can be manufactured without reducing the productivity of the gypsum board even if a large quantity of recycled gypsum causing increase of the mixing water amount is used as a raw gypsum, because the mixing water amount is small and the setting time does not increase for the calcined gypsum manufactured as described above.

Abstract: A method of producing a ceramic component includes dispersing an alpha-alumina nanopowder whose diameter is above 100 nm in water, using 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTC) or 4,5-Dihydroxy-m-benzenedisulfonic Acid, Disodium Salt (Tiron™) as dispersant. The pH is shifted towards the isoelectric point (IEP) by adding a mixture of acetic anhydride and ethylene glycol or polyethylene glycol, drying in a controlled atmosphere (humidity, temperature) and post compacting using cold isostatic pressing and sintering the three-dimensional structure thus formed.

Abstract: The present invention provides a process for preparing a sintered body comprising as a basic component aluminum magnesium titanate represented by the composition formula: MgxAl2(1?x)Ti(1+x)O5 wherein the value of x is 0.1?x<1. The process comprises a step of sintering a formed product from a raw material mixture comprising 100 parts by weight, calculated on an oxide basis, of a mixture comprising a Mg-containing compound, an Al-containing compound and a Ti-containing compound at the same metal component ratio as the metal component ratio of Mg, Al and Ti in the above composition formula, and 1–10 parts by weight of an alkali feldspar represented by the composition formula: (NayK1?y)AlSi3O8 wherein the value of y is 0?y?1.