Ultra-high-strength refractory silicon carbide fiber and process for producing same
US5322822A · kind A · utility
3Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1992 |
| Grant date | Jun 21, 1994 |
| Priority date | — |
| Expiry date | Nov 4, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/571
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Ultra-high-strength refractory silicon carbide fiber having a decomposition temperature of not less than about 1800K, a breaking strength of not less than about 5 GPa, and a modulus of elasticity of not less than about 300 GPa is disclosed, which is obtained by irradiating a precursor comprising organosilicon compound fiber with an ionizing radiation in a mixed carrier gas comprising a reactive gas and a first inert gas to render the precursor infusible and calcining the irradiated precursor in a second inert gas. Irradiation damage can be minimized, and no oxygen is incorporated into the fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.