Oxidation resistant carbon-carbon composites
US4613522A · kind A · utility
21Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 29, 1982 |
| Grant date | Sep 23, 1986 |
| Priority date | — |
| Expiry date | Sep 29, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2214/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An oxidation resistant carbon-carbon composite (31) including a plurality of graphite fibers (13) within a carbonized (graphitized) matrix (14). A first material including boron (16) and a second material including silicon (18) are applied thereto. Heating the composite in the course of service use to a temperature at which the composite cracks enables the boron and silicon to combine to provide a borosilicate sealant of sufficiently low viscosity for sealing cracks in the composite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.