Deposition of improved SiC coatings on carbon-base materials

Details Deposition of improved SiC coatings on carbon-base materials Deposition of improved SiC coatings on carbon-base materials

1982-06-24

1984-10-09

McCamish, Marion E.

Coating processes

Coating by vapor, gas, or smoke

Carbon or carbide coating

427252, 427253, 4272554, 428408, 428215, B32B 900

Patent

active

044761643

ABSTRACT:
Carbon-carbon composite materials are provided with significantly enhanced oxidation resistance by the formation of a SiC coating. The coating is produced from a pack containing a small but effective amount of boron. The balance of the pack is preferably based on Al.sub.2 O.sub.3, SiO.sub.2, and Si. The composite to be coated is embedded in the pack and heated to an elevated temperature. The boron addition provides a conversion SiC coating having enhanced resistance to oxidation.

REFERENCES:
patent: 3935034 (1976-01-01), Hayes

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