Silicon nitride sintered product
US4880756A · kind A · utility
2Cited by
3References
2Claims
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Assignee
Inventors
Key dates
| Filing date | Aug 31, 1988 |
| Grant date | Nov 14, 1989 |
| Priority date | — |
| Expiry date | Aug 31, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/5935
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A silicon nitride sintered product comprises, in % by weight, 1 to 10% Mg, calculated as MgO, 1 to 10% Zr, calculated as ZrO.sub.2, 0.1 to 2.0% of at least one of Al, calculated as Al.sub.2 O.sub.3, Li, calculated as Li.sub.2 O, and Na, calculated as Na.sub.2 O, and the remainder being Si.sub.3 N.sub.4 and unavoidable impurities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.