Silicon carbide-silicon composite having improved oxidation resi

Details Silicon carbide-silicon composite having improved oxidation resi Silicon carbide-silicon composite having improved oxidation resi

1997-01-13

1999-10-05

Weisberger, Richard

Stock material or miscellaneous articles

Structurally defined web or sheet

Including grain, strips, or filamentary elements in...

428110, 428141, 428213, 428336, 428698, 428699, 428697, 428704, B22F 701, B32B 900

Patent

active

059621036

ABSTRACT:
A Silicon carbide-silicon matrix composite having improved oxidation resistance at high temperatures in dry or water-containing environments is provided. A method is given for sealing matrix cracks in situ in melt infiltrated silicon carbide-silicon matrix composites. The composite cracks are sealed by the addition of various additives, such as boron compounds, into the melt infiltrated silicon carbide-silicon matrix.

REFERENCES:
patent: 4599256 (1986-07-01), Vasilos
patent: 4795677 (1989-01-01), Gray
patent: 4892790 (1990-01-01), Gray
patent: 4894286 (1990-01-01), Gray
patent: 5094901 (1992-03-01), Gray

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