Abstract: A sintered molded article includes a ceramic of ?/?-sialon having a grain boundary phase, the grain boundary phase containing at least one hard material formed in situ as an additional phase. A method for the production of the sintered molded article uses at least the following compounds as a starting material: Si3N4, AlN, and, if applicable, Al2O3, at least one oxide of the rare earths, and at least one oxide of the element titanium.

Abstract: A ceramic component that consists of a shell, a filler material and pore channels that pass through the filler material, and can be used as an implant, particularly as a spacer.

Abstract: Zirconium oxide material and a sintered molded body produced from the material. The zirconium oxide is present in the tetragonal phase in an amount of 70 to 99.9 vol.-%. The tetragonal phase is chemically stabilized with rare-earth oxides. The sintered moldings can be used, e.g., in the medical field as implants or as dental prostheses.

Abstract: The invention relates to ?/?-sialon-based materials. The invention particularly relates to ?/?-sialon-based materials that have an improved sintering activity and impart high edge strength to the sintered molded articles made of said materials.

Abstract: A composite material having a first phase includes an aluminum oxide proportion of at least 65% by volume and a second phase comprising a zirconium proportion of 10 to 35% by volume. The zirconium is present as zirconium oxide. The aluminum oxide is a ceramic matrix and the zirconium oxide is dispersed therein. From 90 to 99% of the zirconium oxide is present in the tetragonal phase. A chemical stabilizer for stabilizing the tetragonal phase of the zirconium oxide is also present. The total content of chemical stabilizer is <0.2 mol % relative to the zirconium oxide content.

Abstract: A ceramic composite material and a method for producing same. The ceramic composite material has a ceramic matrix comprising zirconium oxide and at least one secondary phase dispersed therein. The matrix is composed of zirconium oxide as at least 51 vol.-% of composite material, and the secondary phase is in a proportion of 1 to 49 vol.-% of composite material, wherein 90 to 99% of the zirconium oxide is present in the tetragonal phase based on the total zirconium oxide portion. The tetragonal phase of the zirconium oxide is stabilized by at least one member selected from the group consisting of chemical stabilization and mechanical stabilization. The ceramic composite is damage-tolerant.

Abstract: A composite material consisting of aluminium oxide as a ceramic matrix and zirconium oxide dispersed therein. A method for the production thereof, components containing the composite and methods of using the same are also provided.

Abstract: A ceramic component that consists of a shell, a filler material and pore channels that pass through the filler material, and can be used as an implant, particularly as a spacer.

Abstract: Zirconium oxide material and a sintered molded body produced from the material. The zirconium oxide is present in the tetragonal phase in an amount of 70 to 99.9 vol.-%. The tetragonal phase is chemically stabilized with rare-earth oxides. The sintered moldings can be used, e.g., in the medical field as implants or as dental prostheses.

Abstract: The invention relates to a method for producing a ceramic composite material, and a ceramic composite material which in particular is damage-tolerant.

Abstract: Hardness, ageing resistance, wetting behavior in relating to water and high thermal conductivity are known characteristics of sintered molded bodies consisting of aluminum oxide; high strength and a high resistance to cracking, i.e., damage tolerance are known characteristics of sintered molded bodies consisting of zirconium oxide. These properties are combined in a material having a large fraction of aluminum oxide, zirconium oxide and optionally strontium aluminate.

Abstract: A composite material consisting of aluminium oxide as a ceramic matrix and zirconium oxide dispersed therein. The invention also relates to a method for the production thereof and components containing same.

Abstract: A composite material consisting of aluminium oxide as a ceramic matrix and zirconium oxide dispersed therein. A method for the production thereof, components containing the composite and methods of using the same are also provided.

Abstract: A sintered molded body consisting of a material that contains aluminum oxide with chromium doping, zirconium oxide with Y-stabilization and strontium aluminates with variable Cr-doping, which is particularly suitable for medial application.

Abstract: A ready-for-use ceramic produced by sintering a blank and comprising an upper and a lower face, both of which have a support surface for mounting in a clamp mounting of a cutting tool, lateral faces connecting the upper and lower faces, and cutting edges which have chamfers.

Abstract: Hardness, ageing resistance, wetting behavior in relating to water and high thermal conductivity are known characteristics of sintered molded bodies consisting of aluminum oxide; high strength and a high resistance to cracking, i.e., damage tolerance are known characteristics of sintered molded bodies consisting of zirconium oxide. These properties are combined in a material having a large fraction of aluminum oxide, zirconium oxide and optionally strontium aluminate.

Abstract: A sintered molded body consisting of a material that contains aluminum oxide with chromium doping, zirconium oxide with Y-stabilization and strontium aluminates with variable Cr-doping, which is particularly suitable for medical applications.

Abstract: Sialon materials suited for machining metal materials, having HFO2 present in a maximum of 1 mass-% as a sintering additive, methods of producing them and methods of using them.

Abstract: A material based on SiAlON contain 70-97 vol. % of alpha and beta-SiAlON and an amorphous or partially crystalline grain boundary phase and 3 to 30 vol.% of a hard material. The material has an alpha-SiAlON gradient which decreases from the outside to the inside.

Abstract: Zirconium dioxide containing 2 to 40 vol. % of stabilizing oxides is embedded in the matrix material of a sintered molding consisting of an aluminum oxide/chromium oxide mixed crystal. The quantity of stabilizing oxides added is chosen so that the zirconium dioxide is predominantly tetragonal. The molar ratio of the zirconium dioxide containing the stabilizing oxides to the chromium oxide is between 1000:1 and 20:1 and the zirconium dioxide has a maximum particle size of 2 .mu.m.