Method for making ceramic matrix composites
US5707471A · kind A · utility
40Cited by
2References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 2, 1995 |
| Grant date | Jan 13, 1998 |
| Priority date | — |
| Expiry date | Oct 2, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2237/38
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Fiber reinforced ceramic matrix composites are prepared by coating refractory fibers having a interfacial coating thereon with a curable preceramic polymer having a char which contains greater than about 50% sealant oxide atoms followed by forming the coated fibers into the desired shape, curing the coated fibers to form a pre-preg, heating the pre-preg to form a composite and heating the composite in an oxidizing environment to form an in situ sealant oxide coating on the composite. The resultant composites have good oxidation resistance at high temperature as well as good strength and toughness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.