Nanocomposites of silicon nitride, silicon carbide, and boron nitride
US7077991B2 · kind B2 · utility
6Cited by
8References
18Claims
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Key dates
| Filing date | Feb 6, 2004 |
| Grant date | Jul 18, 2006 |
| Priority date | — |
| Expiry date | Apr 4, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/96
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Densified composites of silicon nitride, silicon carbide, and boron nitride that exhibit high creep resistance are obtained by sintering a mixture of amorphous powders of silicon nitride, silicon carbide, and boron nitride in the presence of an electric field under high pressure. The grain size in the resulting composite is less than 100 nanometers for all components of the composite, and the composite exhibits high creep resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.