Abstract: There is described a two-Level Layer System with Pyrochlore Phase and Oxides. Besides a good thermal insulation property, thermal insulation layer systems must also have a long lifetime of the thermal insulation layer. The layer system has a layer sequence of a metallic bonding layer, an inner ceramic layer and an outer ceramic layer, which are specially matched to one another.

Abstract: A solid solution-comprising ceramic article useful in semiconductor processing, which is resistant to erosion by halogen-containing plasmas. The solid solution-comprising ceramic article is formed from a combination of yttrium oxide and zirconium oxide. In a first embodiment, the ceramic article includes ceramic which is formed from yttrium oxide at a molar concentration ranging from about 90 mole % to about 70 mole %, and zirconium oxide at a molar concentration ranging from about 10 mole % to about 30 mole %. In a second embodiment, the ceramic article includes ceramic which is formed from zirconium oxide at a molar concentration ranging from about 96 mole % to about 94 mole %, and yttrium oxide at a molar concentration ranging from about 4 mole % to about 6 mole %.

Abstract: A nonlinear resistor ceramic composition includes zinc oxide as main component, and, as subcomponents, with respect to 100 mol of zinc oxide in terms of respective elements, more than 0.05 to less than 30 at. % of oxide of Co, more than 0.05 to less than 20 at. % of oxide of Sr, more than 0.01 to less than 20 at. % of oxides of rare earth except for Sc and Pm, more than 0.01 to less than 10 at. % of oxide of Si and does not include Al, Ga and In. Alternatively, a nonlinear resistor ceramic composition includes zinc oxide as main component, and, as subcomponents, with respect to 100 mol of zinc oxide in terms of respective elements, more than 0.05 at. % and less than 30 at. % of an oxide of Co, more than 0.05 to less than 20 at. % of oxide of Sr, more than 0.01 to less than 20 at. % of oxides of rare earth except for Sc and Pm, more than 0.01 to less than 10 at. % of oxide of Si and more than 0.01 to less than 10 at. % of calcium zirconate in terms of CaZrO3.

Abstract: The present invention relates to a fluorescent ceramic having the general formula Gd2O2S doped with M, whereby M represents at least one element selected form the group Ce, Pr, Eu, Tb, Yb, Dy, Sm and/or Ho, whereby said fluorescent ceramic comprises a single phase in its volume; to a method for manufacturing a fluorescent ceramic using single-axis hot pressing; a detector for detecting ionizing radiation and to a use of said detector for detecting ionizing radiation. The method for manufacture of a fluorescent ceramic material using a single-axis hot pressing, comprises the steps: a) selecting a pigment powder of Gd2O2S doped with M, and M represents at least one element selected from the group of Eu, Tb, Yb, Dy, Sm, Ho, Ce and/or Pr, whereby the grain size of said powder used for hot-pressing is of 1 ?m, and said hot-pressing is carried out at—a temperature of 1000° C. to 1400° C.; and/or—a pressure of 100 Mpa to 300 MPa; air annealing at a temperature of 700° C. to 1200° for a time period of 0.

Abstract: The present invention provides a method of crystallizing Yb:C-FAP [Yb3+:Ca5(PO4)3F], by dissolving the Yb:C-FAP in an acidic solution, following by neutralizing the solution. The present invention also provides a method of forming crystalline Yb:C-FAP by dissolving the component ingredients in an acidic solution, followed by forming a supersaturated solution.

Abstract: The invention relates to suspension of primary particles of oxide-ceramic material, wherein the primary particles have an average particle size in the range from 10 to 1000 nm and are coated with a chromophoric component, a process for their preparation and their use in particular in the preparation of ceramic mouldings and dental restorations. The invention further relates to a process for the preparation of ceramic mouldings.

Abstract: A method of forming nanometer sized fine particles of functional ceramic from a bulk functional ceramic, particularly fine particles of phosphorous ceramics from a bulk phosphor material is disclosed. The method relies on irradiation of a bulk phosphorous ceramic in a liquid with an ultrashort-pulsed-laser-fragmentation beam to thereby form nanometer sized particles of the phosphorous ceramic. The method is unique in that the generated particles retain the chemical and crystalline properties of the bulk phosphorous ceramic. The generated solutions are stable colloids from which the particles can be isolated or used as is.

Abstract: Provided is an optical element, which is formed by vacuum-sintering a molded body of ceramic particles having an average particle diameter of 1 ?m or more and 10 ?m or less and including LnxAlyO|x+y|×1.5 (Ln represents a rare-earth element, x represents 1?x?10, and y represents 1?y?5). Ln preferably includes at least one kind selected from La, Gd, Yb, and Lu. The optical element preferably has a refractive index of 1.85 or more and 2.06 ?m or less, and an Abbe number of 48 or more and 65 or less. The optical element having optical properties of high refractive index and low dispersibility is obtained.

Abstract: A method of preparing a fine powder of calcium lanthanoid sulfide is disclosed. The method includes spraying soluble calcium and lanthanoid salts into at least one precipitating solution to form a precipitate comprising insoluble calcium and lanthanoid salts, optionally, oxidizing the precipitate comprising insoluble calcium and lanthanoid salts, and sulfurizing the optionally oxidized precipitate to form a fine powder of calcium lanthanoid sulfide. An alternative method for forming the powder is by flame pyrolysis. The calcium lanthanoid sulfide powder produced by either method can have an impurity concentration of less than 100 ppm, a carbon concentration of less than 200 ppm, a BET surface area of at least 50 m2/g, and an average particle size of less than 100 nm.

Abstract: A separation membrane according to the present invention is characterized by having a porous tube containing an alumina as a main component and an attachment member disposed in a connection position of the porous tube, wherein the porous tube and the attachment member are bonded by a ceramic oxide-based bonding agent containing 17 to 48 wt % of SiO2, 2 to 8 wt % of Al2O3, 24 to 60 wt % of BaO, and 0.5 to 5 wt % of ZnO as essential components and containing at least one of La2O3, CaO, and SrO, and a thin zeolite layer is formed on a surface of the porous tube. The attachment member is bonded to the porous tube before the formation of the zeolite layer. Therefore, the bonding agent can have a melting temperature higher than 600° C., which is the upper heatproof temperature limit of the zeolite. Thus, the ceramic oxide material for the bonding agent can be selected from a wider range of compositions such as glass compositions (without limitations on the glass softening temperature).

Abstract: Ceramic material of the general formula: [SE1-xMIIx][Cr1-y-zRyLz]O3, wherein SE stands for one or more rare earth metals, MII stands for one or more metals of the oxidation state +II, L stands for Al and/or Ga, R stands for one or more metals selected from Fe, Zn, Ge, Sn, and it holds that: 0<x<1; 0<y<1; 0.5<z<1; y+z<1.

Abstract: Ceramic materials with relatively high resistance to wetting by various liquids, such as water, are presented, along with articles made with these materials. The oxide materials described herein as a class typically contain one or more of ytterbia (Yb2O3) and europia (Eu2O3). The oxides may further contain other additives, such as oxides of gadolinium (Gd), samarium (Sm), dysprosium (Dy), or terbium (Tb). In certain embodiments the oxide, in addition to the ytterbia and/or europia, further comprises lanthanum (La), praseodymium (Pr), or neodymium (Nd).

Abstract: An article for use in aggressive environments is presented. In one embodiment, the article comprises a substrate and a self-sealing and substantially hermetic sealing layer disposed over the bondcoat. The substrate may be any high-temperature material, including, for instance, silicon-bearing ceramics and ceramic matrix composites. A method for making such articles is also presented. The method comprises providing a substrate; disposing a self-sealing layer over the substrate; and heating the sealing layer to a sealing temperature at which at least a portion of the sealing layer will flow.

Abstract: There is described a Ceramic Powder, a Ceramic Layer and a Layer System of Two Pyrochlore Phases and Oxides. Besides a good thermal insulation property, thermal insulation layer systems must also have a long lifetime of the thermal insulation layer. The layer system has a ceramic layer, which comprises a mixture of two pyrochlore phases.

Abstract: A transparent, polycrystalline ceramic is described. The ceramic comprises crystallites of the formula AxCuByDvEzFw, whereby A and C are selected from the group consisting of Li+, Na+, Be2+, Mg2+, Ca2+, Sr2+, Ba2+, Al3+, Ga3+, In3+, C4+, Si4+, Ge4+, Sn2+/4+, Sc3+, Ti4+, Zn2+, Zr4+, Mo6+, Ru4+, Pd2+, Ag2+, Cd2+, Hf4+, W4+/6+, Re4+, Os4+, Ir4+, Pt2+/4+, Hg2+ and mixtures thereof, B and D are selected from the group consisting of Li+, Na+, K+, Mg2+, Al3+, Ga3+, In3+, Si4+, Ge4+, Sn4+, Sc3+, Ti4+, Zn2+, Y3+, Zr4+, Nb3+, Ru3+, Rh3+, La3+, Lu3+, Gd3+ and mixtures thereof, E and F are selected mainly from the group consisting of the divalent anions of S, Se and O and mixtures thereof, x, u, y, v, z and w satisfy the following formulae 0.125<(x+u)/(y+v)?0.

Abstract: A transparent, polycrystalline ceramic is described. The ceramic comprises crystallites of the formula AxCuByDvEzFw, whereby A and C are selected from the group consisting of Li+, Na+, Be2+, Mg2+, Ca2+, Sr2+, Ba2+, Al3+, Ga3+, In3+, C4+, Si4+, Ge4+, Sn2+/4+, Sc3+, Ti4+, Zn2+, Zr4+, Mo6+, Ru4+, Pd2+, Ag2+, Cd2+, Hf4+W4+/6+, Re4+, Os4+, Ir4+,, Pt2+/4+, Hg2+ and mixtures thereof, B and D are selected from the group consisting of Li+, Na+, K+, Mg2+, Al3+, Ga3+, In3+, Si4+, Ge4+, Sn4+, Sc3+, Ti4+, Zn2+, Y3+, Zr4+, Nb3+, Ru3+, Rh3+, La3+, Lu3+, Gd3+ and mixtures thereof, E and F are selected mainly from the group consisting of the divalent anions of S, Se and O and mixtures thereof, x, u, y, v, z and w satisfy the following formulae 0.125<(x+u)/(y+v)?0.55 z+w=4 and at least 95% by weight of the crystallites display symmetric, cubic crystal structures of the spinel type, with the proviso that when A=C=Mg2+ and B=D=Al3+, E and F cannot both be O.

Abstract: Disclosed and described are multi-component inorganic phosphate formulations of acidic phosphate components and basic oxide/hydroxide components. Also disclosed are high solids, atomizable compositions of same, suitable for spray coating.

Abstract: This invention discloses the synthesis of a bifunctional La0.6Ca0.4Co1-xIrxO3 (x=0˜1) perovskite compound with a superb bifunctional catalytic ability for the oxygen reduction and generation in alkaline electrolytes. Synthetic routes demonstrated include solid state reaction, amorphous citrate precursor, and mechanical alloying. The interested compound demonstrates notable enhancements over commercially available La0.6Ca0.4CoO3.

Abstract: The present invention is related to producing fine nano or submicron-scale precision ceramic powder by applying an innovative chemical reactor with powder collection to the glycine-nitrate combustion process (GNC-P). The unique feature lies in the utilization of a simple-operating process to massively produce nano or submicron-scale ceramic oxide powder with multiple metal components. The present invention not only provides very high powder collection efficiency and production yield as well as safety but also satisfies requirements of industrial safety and environmental safety, and lowers production cost.

Abstract: The fabrication of ceria based electrolytes to densities greater than 97% of the theoretical achievable density at temperatures below 1200° C., preferably approximately 1000° C., is disclosed. The electrolyte has a concentration of divalent cations minus an adjusted concentration of trivalent cations of between 0.01 mole % and 0.1 mole %.

Abstract: A functionally doped polycrystalline ceramic laser medium and method of making thereof are provided. The medium includes a solid state polycrystalline Ytterbium doped Yttria or Scandia (Yb:Y2O3 or Yb:Sc2O3) laser medium with a discrete or continuous gradient doping profile and methods for manufacturing the same. The doping profile can be two- or three-dimensional and can vary depending upon the laser geometry, the pumping scheme, and the benefits to be desired from the laser medium's structure. The grading direction can be linear, axial, radial, or any combination thereof. The material can be made from a combination of doped and undoped solid shapes, loose powders, and green shapes, and can be diffusion bonded or densified to a desired final shape using techniques such as pressureless sintering, hot pressing, hot forging, spark plasma sintering, and hot isostatic pressing (HIPing), or their combinations.

Abstract: A corrosion resistant member made of the Y2O3 sintered material that contains 99.9% by weight or more Y in terms of Y2O3, and has a difference in mean crystal grain size between the surface and the inside region of the Y2O3 sintered material not larger than 30 ?m.

Abstract: Ceramic materials with relatively high resistance to wetting by various liquids, such as water, are presented, along with articles made with these materials, methods for making these articles and materials, and methods for protecting articles using coatings made from these materials. One embodiment is an article comprising a material that is transparent to electromagnetic radiation of at least one type selected from the group consisting of ultraviolet radiation, visible light, and infrared radiation. The material comprises a primary oxide and a secondary oxide. The primary oxide comprises cerium or hafnium. The secondary oxide comprises (i) praseodymium or ytterbium, and (ii) another cation selected from the group consisting of the rare earth elements, yttrium, and scandium.

Abstract: A method of making a transparent ceramic including the steps of providing nano-ceramic powders in a processed or unprocessed form, mixing the powders with de-ionized water, the step of mixing the powders with de-ionized water producing a slurry, sonifing the slurry to completely wet the powder and suspend the powder in the de-ionized water, separating very fine particles from the slurry, molding the slurry, and curing the slurry to produce the transparent ceramic.

Abstract: An electrostatic chuck that is a member for a semiconductor-manufacturing apparatus contains an yttrium oxide material containing first inorganic particles and second inorganic particles. The first inorganic particles form solid solutions in yttrium oxide, can be precipitated from yttrium oxide, and are present in grains of yttrium oxide. The second inorganic particles can form solid solutions in the first inorganic particles, are unlikely to form any solid solution in yttrium oxide, and are present at boundaries between the yttrium oxide grains. The first inorganic particles contain at least one of ZrO2 and HfO2. The second inorganic particles contain at least one selected from the group consisting of MgO, CaO, SrO, and BaO. The yttrium oxide material is produced in such a manner that solid solution particles are prepared by mixing and firing the first and second inorganic particles and are mixed with yttrium oxide and the mixture is fired.

Abstract: A translucent polycrystalline sintered body is mainly composed of an alumina, is suitable for the manufacture of an arc tube for a high-intensity discharge lamp, and has an average grain diameter of 35 to 70 ?m, preferably 50 to 60 ?m. In a case where the sintered body is in a 0.5-mm-thick flat plate shape, the in-line transmittance of the sintered body is 30% or more, preferably 50% or more. In this case, the ratio between maximum and minimum in-line transmittance values is 2:1 to 1:1 in the visible region of 360 to 830 nm. The bending strength of the sintered body is 250 MPa or more, preferably 300 MPa or more.

Abstract: A method of forming (and an apparatus for forming) a metal-doped aluminum oxide layer on a substrate, particularly a semiconductor substrate or substrate assembly, using a vapor deposition process.

Abstract: The present invention provides a water-based method for producing Aluminum oxynitride (AION) green bodies characterized by a density of at least 99% as measured according to ASTM C20-92 and/or at least 60% as measured by green density measurements The method comprises steps selected from (a) ball-milling Alumina powder and deflocculant in water for a period of time t, said t is between about 10 hours and about 24 hours, (b) homogeneously dispersing AIN in said ball-milled product for a period of time t1, said t1 is between about 0.5 hours and about 4 hours, (c) vacuum drying said product, thereby providing dense green bodies, and, (d) sintering said dense green bodies at temperature T1 in nitrogen for several time durations t2, said t2 is between about 0.5 hours and about 10 hours, said Tï is between about 1700 degrees C. and about 2100 degrees C.

Abstract: A molten product in the form of a particle having a sphericity higher than or equal to 0.6, having the following chemical composition, in weight percent based on the oxides and for a total of 100%: (ZrO2+HfO2): complement to 100%, 6%?CeO2?31%, 0.8%?Y2O3?8.5%, 0%?Al2O3?30%, 0%?SiO2?17%, 0?TiO2?8.5%, 0?MgO?6%, and other oxides?1%, provided that, by denoting by “C” the weight ratio CeO2/(ZrO2+HfO2) and by “Y” the weight ratio Y2O3/(ZrO2+HfO2), 0?C?0.6 and Y?0.02 and Min(63.095*Y2?11.214*Y+0.4962; 0.25)?C ??(I) and C?250*Y2?49.1*Y+2.6 ??(II).

Abstract: The present invention relates to stabilized supports stable at temperatures above 800° C., and method of preparing such supports, which includes adding a rare earth metal to an aluminum-containing precursor prior to calcining. The present invention can be more specifically seen as a support, process and catalyst wherein the stabilized alumina catalyst support comprises a rare earth aluminate with a molar ratio of aluminum to rare earth metal greater than 5:1 and, optionally, an aluminum oxide. More particularly, the invention relates to the use of catalysts comprising rhodium, ruthenium, iridium, or combinations thereof, loaded onto said stabilized supports for the synthesis gas production via partial oxidation of light hydrocarbons, and further relates to gas-to-liquids conversion processes.

Abstract: Particles including a YAG core and a coating of sintering aid deposited thereon. The particles and agglomerates thereof maybe formed as a powder. The coated YAG-containing particles are well-suited to production of polycrystalline YAG-containing ceramics. The coated YAG-containing particles may be fabricated using a novel fabrication method which avoids the need for formation of a homogeneous powder mixture of YAG and sintering aid. In the method, a solution including a sintering aid or sintering aid precursor is prepared and mixed with YAG-containing particles to form a mixture. The mixture may be sprayed into a drying column and dried to produce coated particles. Alternatively, the YAG particles and sintering aid or sintering aid precursor solution may be separately introduced to the drying column and dried to form coated YAG-containing particles.

Abstract: A transparent sintered yttrium aluminum garnet ceramic material formed from a solid-state reaction of a mixture of yttrium oxide powder and aluminum oxide powder during sintering. The ceramic material preferably has an in-line transmission of greater than 75% so it may used to fabricate arc tubes for high intensity discharge lamps used in automotive headlamps.

Abstract: A thermistor based on a composition having the general formula (I): Re2-x-yCraMnbMcEyOz wherein Re is a rare earth metal or a mixture of two or more rare earth metals, M is a metal selected from the group consisting of nickel, cobalt, copper, magnesium and mixtures thereof, E is a metal selected from the group consisting of calcium, strontium, barium and mixtures thereof, x is the sum of a+b+c and is a number between 0.1 and 1, and the relative ratio of the molar fractions a, b and c is in an area bounded by points A, B, C and D in a ternary diagram, wherein point A is, if y<0.006, at (Cr=0.00, Mn=0.93+10-y, M=0.07-10-y), and, if y?0.006, at (Cr=0-00, Mn=0.99, M=0.01), point B is, if y<0.006, at (Cr=0.83, Mn=0.10+10-y, M=0.07?10-y), and, if y?0.006, at (Cr=0.83, Mn=0.16, M=0.01), point C is at (Cr=0.50, Mn=0.10, M=0.40) and point D is at (Cr=0.00, Mn=0.51, M=0.49), y is a number between 0 and 0.5-x, and z is a number between 2.5 and 3.5.

Abstract: The invention relates to a phosphor in a polycrystalline ceramic structure and a light-emitting element provided with the same comprising a Light-Emitting Diode (LED) in which a composite structure of phosphor particles is embedded in a matrix, characterized in that the matrix is a ceramic composite structure comprising a polycrystalline ceramic alumina material, hereafter called luminescent ceramic matrix composite. This luminescent ceramic matrix composite can be made by the steps of converting a powder mixture of ceramic phosphor particles and alumina particles into a slurry, shaping the slurry into a compact, and applying a thermal treatment, optionally in combination with hot isostatic pressing into a polycrystalline phosphor-containing ceramic alumina composite structure.

Abstract: The invention provides a method for producing ceramic nanoparticles, which comprises hydrolyzing a ceramic material in a thin film fluid formed between processing surfaces arranged to be opposite to each other so as to be able to approach to and separate from each other, at least one of which rotates relative to the other.

Abstract: A ceramic material has a perovskite structure and is represented by formula of (1?x)ABO3-xYZO3. In the formula, “x” is a real number that is greater than 0 and is less than 1 each of “A,” “B,” “Y,” and “Z” is one or more kinds selected from a plurality of metal ions M other than a Pb ion and alkali metal ions, “A” is bivalent, “B” is tetravalent, “Y” is trivalent or combination of trivalent metal ions, and “Z” is bivalent and/or trivalent metal ions, or a bivalent and/or pentavalent metal ions.

Abstract: Metal ion conducting ceramic materials are disclosed having characteristics of high ion conductivity for certain alkali and monovalent metal ions at low temperatures, high selectivity for the metal ions, good current efficiency and stability in water and corrosive media under static and electrochemical conditions. The metal ion conducting ceramic materials are fabricated to be deficient in the metal ion. One general formulation of the metal ion conducting ceramic materials is Me1+x+y?zMIIIyMIV2?ySixP3?xO12?z/2, wherein Me is Na+, Li+, K+, Rb+, Cs+, Ag+, or mixtures thereof, 2.0?x?2.4, 0.0?y?1.0, and 0.05?z?0.9, where MIII is Al3+, Ga3+, Cr3+, Sc3+, Fe3+, In3+, Yb3+, Y3+, or mixtures thereof and MIV is Ti4+, Zr4+, Hf4+, or mixtures thereof.

Abstract: Embodiments of compositions comprising materials satisfying the general formula AM1?xM?xM?yO3+y are disclosed, along with methods of making the materials and compositions. In some embodiments, M and M? are +3 cations, at least a portion of the M cations and the M? cations are bound to oxygen in trigonal bipyramidal coordination, and the material is chromophoric. In some embodiments, the material forms a crystal structure having a hexagonal unit cell wherein edge a has a length of 3.50-3.70 ? and edge c has a length of 10-13 ?. In other embodiments, edge a has a length of 5.5-7.0 ?. In particular embodiments, M? is Mn, and Mn is bonded to oxygen with an apical Mn—O bond length of 1.80 ? to 1.95 ?. In some embodiments, the material is YIn1?xMnxO3, x is greater than 0.0 and less than 0.75, and the material exhibits a surprisingly intense blue color.

Abstract: A thermal spraying powder contains granulated and sintered particles of an yttrium-aluminum double oxide formed by granulating and sintering raw-material particles. The crushing strength of the granulated and sintered particles is 15 MPa or more, and 10% particle size of the granulated and sintered particles is 6 ?m or more. The thermal spraying powder is suitable for use in forming a thermal spray coating through plasma spraying.

Abstract: There is described a Ceramic Powder, a Ceramic Layer and a Layer System with Pyrochlore Phase and Oxides. Besides a good thermal insulation property, thermal insulation layer systems must also have a long lifetime of the thermal insulation layer. A described layer system has a layer sequence of a metallic bonding layer, an inner ceramic layer and an outer ceramic layer, which are specially matched to one another.

Abstract: A transparent ceramic according to one embodiment includes a rare earth garnet comprising AhBiCjO12, where h is 3±10%, i is 2±10%, and j is 3±10%. A includes a rare earth element or a mixture of rare earth elements, B includes at least one of aluminum, gallium and scandium, and C includes at least one of aluminum, gallium and scandium, where A is at a dodecahedral site of the garnet, B is at an octahedral site of the garnet, and C is at a tetrahedral site of the garnet. In one embodiment, the rare earth garment has scintillation properties. A radiation detector in one embodiment includes a transparent ceramic as described above and a photo detector optically coupled to the rare earth garnet.

Abstract: There is described a Ceramic Powder, a Ceramic Layer and a Layer System of Two Pyrochlore Phases and Oxides. Besides a good thermal insulation property, thermal insulation layer systems must also have a long lifetime of the thermal insulation layer. The layer system has a ceramic layer, which comprises a mixture of two pyrochlore phases.

Abstract: A thermal spray powder contains particles composed of an oxide of any of the rare earth elements having an atomic number of 39 or from 59 to 70. The crushing strength of the particles is 80 MPa or greater. The ratio of bulk specific gravity to true specific gravity of the thermal spray powder is 0.15 or greater. The particles are preferably granulated and sintered particles. The average particle size of primary particles constituting the granulated and sintered particles is preferably 6 ?m or less.

Abstract: A method of making a solid electrolyte-YSZ product, where the method includes the step of providing a powdered mixture of zirconia, yttria and about 2%, by wt., or less of a metal oxide, where yttria-stabilized zirconia is not added to the mixture. The method also includes sintering the powdered mixture at about 1500° C. or less, for about 5 hours or less, to form a reaction sintered YSZ. Also, a method of making a fuel cell electrolyte that includes the step of forming a green body that includes zirconia, yttria and about 2%, by wt., or less of a metal oxide, where yttria-stabilized zirconia is not added to the green body. The method also includes shaping the green body into a form of the electrolyte, and sintering the green body at about 1500° C. or less to form a reaction sintered yttria-stabilized zirconia and metal oxide electrolyte.

Abstract: There is provided an yttrium oxide-containing material with excellent mechanical characteristics. The yttrium oxide-containing material becomes strong by adding silicon carbide (SiC) and yttrium fluoride (YF3) to yttrium oxide (Y2O3). Accordingly, the yield, handling and reliability can be improved when this strengthened yttrium oxide-containing material is applied to and used for components of semiconductor manufacturing equipment.

Abstract: The invention relates to a ceramic luminescent material for LEDs with reduced scattering made by a uniaxial hot-pressing step.

Abstract: 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.

Abstract: A ceramic member having a high density, small grain diameter, and excellent plasma resistance is provided. The ceramic member is constituted of a fine structure composed of fine grains, which is a ceramic member comprising an yttria as a main component and obtained through firing, wherein the ceramic member has an open porosity, as determined through a measurement by the Archimedes method, of less than 0.5%. By diminishing open voids, sites which is an origin of plasma erosion can be diminished. Thus, a ceramic member having excellent plasma resistance can be provided. By inhibiting abnormal grain growth to form a ceramic member constituted of stall grains, particle contamination by dusting can be reduced. Thus, plasma resistance and preventing particulate contamination can be improved.

Abstract: The disclosed invention relates to a method of manufacture of transparent ceramics such as yttrium aluminum garnet by tape casting. The method entails forming a mixture of ceramic oxide, dispersant and organic solvent, milling the mixture to produce a first slurry, mixing the first slurry with an organic binder and a plasticizer to form a treated slurry, milling the treated slurry to produce milled slurry, tape casting the milled slurry to produce cast tape, drying the cast tape to produce dried tape, stacking portions of dried tape to form an assembly, compressing the assembly to produce a preform, heating the preform to produce a green preform, and sintering the green preform to produce transparent yttrium aluminum garnet. The method may be used to produce a unitary ceramic product having differing transparent sections as well as transparent ceramic product having a dopant gradient across a portion of the thickness of the product.

Abstract: A thermal barrier coating includes a microstructure and an composition including: at least one ceramic based compound comprising at least one oxide of a material selected from the group consisting of lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, indium, scandium, yttrium, zirconium, hafnium, titanium, and combinations thereof. The coating includes a nano-structure having a porosity of at most 50% by volume of the coating, and the coating comprises nano-structured inclusions.