Sintering of silicon nitride using Be additive
US4119689A · kind A · utility
30Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1977 |
| Grant date | Oct 10, 1978 |
| Priority date | — |
| Expiry date | Jan 3, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/593
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A particulate dispersion of silicon nitride and beryllium additive is formed into a green body and sintered at a temperature ranging from about 1900.degree. to about 2200.degree. C in a sintering atmosphere of nitrogen at superatmospheric pressure producing a sintered body with a density ranging from about 80 to about 100%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.