Composite of Si.sub.3 N.sub.4 by infiltration
US4661461A · kind A · utility
1Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1985 |
| Grant date | Apr 28, 1987 |
| Priority date | — |
| Expiry date | Jun 3, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B41/86
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A composite is produced by infiltrating the open pores of a polycrystalline silicon nitride body with a member selected from the group consisting of barium fluoride, calcium fluoride, magnesium fluoride, strontium fluoride, cerium fluoride, dysprosium fluoride, gadolinium fluoride, lanthanum fluoride, samarium fluoride, yttrium fluoride, and a mixture of said fluoride with a metal oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.