Post coating treatment of silicon carbide coated carbon-carbon s

Details Post coating treatment of silicon carbide coated carbon-carbon s Post coating treatment of silicon carbide coated carbon-carbon s

1983-07-25

1994-07-05

Lusignan, Michael R.

Coating processes

With post-treatment of coating or coating material

Heating or drying

4274192, 427380, 4274197, 501 88, B05D 302

Patent

active

053265955

ABSTRACT:
A post treatment for carbon-carbon substrates for the protection of carbon and graphite materials to which have been applied a silicon carbide primary coating from degradation at elevated temperatures. The treatment comprising coating the substrate with a first film of monoaluminum phosphate, water, particulate silicate carbide, silicon carbide felt, alumina, and boron; curing the first film, applying over the first film, a second film comprising water, sodium silicate, sodium borate, particulate silicon carbide and silicon carbide felt, and curing the second coating. Optionally a third film may be applied over the cured second film. The third film comprises sodium borate, water and sodium silicate which is cured after application.

REFERENCES:
patent: 3249460 (1961-03-01), Gerry
patent: 3275471 (1966-09-01), Lowell
patent: 3955034 (1976-05-01), Fletcher
patent: 4072530 (1978-02-01), Hirome

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