Method for producing a sintered silicon nitride base ceramic and said ceramic
US3950464A · kind A · utility
46Cited by
2References
2Claims
0Family size
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Inventor
Key dates
| Filing date | Oct 23, 1973 |
| Grant date | Apr 13, 1976 |
| Priority date | — |
| Expiry date | Oct 23, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/584
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A silicon nitride based ceramic is formed of silicon nitride and at least two metal oxides of such a type that when the metal oxides are heated separately they form a spinel. Combination of said metal oxides and said silicon nitride as fine powders and sintering same at a specified temperature for a specified period of time results in a silicon nitride based ceramic having improved mechanical and chemical properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.