Method of manufacturing .beta.'SiAlON compounds
US4147759A · kind A · utility
14Cited by
2References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 27, 1977 |
| Grant date | Apr 3, 1979 |
| Priority date | — |
| Expiry date | Sep 27, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/14
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Method of manufacturing silicon nitrides with a general formula of Si.sub.6-z Al.sub.z O.sub.z N.sub.8-z, in which z is a number less than or equal to 2.8. Silicon nitride is made to react at a temperature higher than 1600.degree. C. and in the finely divided state on aluminium oxynitride, and in the presence of an agent which generates gaseous silicon monoxide. Application to the manufacture of hard materials of high resistance to oxidation and to creep at high temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.