Silicon nitride sintered products having high corrosion resistance and process for production thereof
US4499192A · kind A · utility
6Cited by
5References
1Claims
0Family size
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Key dates
| Filing date | Nov 24, 1982 |
| Grant date | Feb 12, 1985 |
| Priority date | — |
| Expiry date | Nov 24, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/584
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A silicon nitride sintered product and processes for the production thereof are described, wherein the product comprises from 75 to 97.9% by weight of silicon nitride, from 2 to 20% by weight of yttrium oxide and cerium oxide in a molar ratio of cerium oxide to yttrium oxide of 0.4/1 to 4/1, and from 0.1 to 8% by weight of aluminum oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.