Composite ceramic sintered body and process for production thereof
US5132257A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1990 |
| Grant date | Jul 21, 1992 |
| Priority date | — |
| Expiry date | Oct 26, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/9684
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A composite ceramic sintered body is made from a ceramic matrix comprised mainly of silicon nitride, silicon oxynitride or an inorganic oxide selected from alumina, mullite, zirconia, high silica glass, lithium-aluminosilicate glass, magnesium-aluminosilicate glass or barium-magnesium-aluminosilicate glass, containing both whiskers and particles of a material selected from silicon carbide, silicon nitride, silicon oxynitride, alumina and zirconia dispersed therein. The whiskers have a diameter of 0.1 to 5 .mu.m and the particles have an average particle size of 5 to 60 .mu.m. The composite ceramic sintered body is homogeneous and isotropic, and it has a high strength and high toughness at a high temperature and an excellent heat resistance and oxidation resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.