Silicon nitride sintered body and manufacturing method thereof
US4692420A · kind A · utility
15Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1986 |
| Grant date | Sep 8, 1987 |
| Priority date | — |
| Expiry date | Aug 4, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/584
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A silicon nitride sintered body essentially consisting of compounds of Mg, Sr, Ce and Al in amounts of from 0.5 to 5% by weight when calculated as MgO, from 0.5 to 5% by weight when calculated as SrO, from 1 to 10% by weight when calculated as CeO.sub.2 and from 1 to 20% by weight when calculated as Al.sub.2 O.sub.3, respectively, and the balance being silicon nitride. A method of manufacturing the silicon nitride sintered body is also disclosed. The silicon nitride sintered body has a low thermal conductivity while high mechanical strength and high thermal shock resistance being maintained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.