Silicon nitride sintered body
US5049531A · kind A · utility
7Cited by
11References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 7, 1989 |
| Grant date | Sep 17, 1991 |
| Priority date | — |
| Expiry date | Sep 7, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/5935
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A sintered body of silicon nitride having high strength, toughness and oxidation resistance consists essentially of, by weight percentages, 0.5 to 7.0% of a Mg component calculated as MgO, 0.5 to 7.0% of a Zr component calculated as ZrO.sub.2, 0.5 to 10.0% of a Ce component calculated as CeO.sub.2, and the balance being Si.sub.3 N.sub.4. The sum of Mg, Zr and Ce components calculated as oxides is 3 to 20% by weight. This product is suitable for engine parts or cutting tools.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.