Method for providing a coating layer of silicon carbide on subst

Details Method for providing a coating layer of silicon carbide on subst Method for providing a coating layer of silicon carbide on subst

1983-09-19

1985-12-24

Childs, Sadie L.

Coating processes

Coating by vapor, gas, or smoke

Carbon or carbide coating

427 95, 4272551, C23C 1100, C23C 1300

Patent

active

045605890

ABSTRACT:
The invention provides a method for providing a highly protective coating layer of silicon carbide on to the surface of a substrate. The method comprises pyrolyzing the vapor of an organosilicon compound having at least one hydrogen atom directly bonded to the silicon atom in a molecule but having no halogen or oxygen atom directly bonded to the silicon atom at a temperature of 700.degree. to 1400.degree. C. in contact with the substrate surface to deposit silicon carbide thereon. In particular, the method is useful to form a sheath-and-core structure composed of the core of carbon filament and the coating layer of silicon carbide so that the carbon fibers are imparted with greatly improved resistance against oxidation and chemicals including molten metals when the carbon fibers are used as a reinforcing material of a fiber-reinforced metal composite as well as with improved affinity with molten resins and metals which is also an advantageous property as a reinforcing material for such matrix materials.

REFERENCES:
patent: 3382113 (1968-05-01), Ebert et al.
patent: 3386866 (1968-06-01), Ebert et al.
patent: 3738906 (1973-06-01), Olcott
patent: 3877080 (1975-04-01), Olcott
patent: 4425407 (1984-01-01), Galasso et al.

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