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US 5,196,120 AGranted
Ceramic-ceramic composite filter
AssigneeMinnesota Mining and Manufacturing Company
InventorLloyd R. White
Life of this patent
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Abstract
A ceramic fiber-ceramic composite filter having a support composed of ceramic fibers, preferably texturized, a carbonaceous layer thereover, and a silicon carbide coating over the carbonaceous layer and coated on substantially all of the fibers. A strong, tough, light weight filter is achieved which is especially useful in high temperature gas environments.
Claims5
A ceramic fiber-ceramic composite filter comprising a base or support of at least one layer of ceramic fibers, at least some of which are texturized;
- a carbonaceous layer over said base;
- a felt layer comprising chopped ceramic fibers deposited over said carbonaceous layer;
- and a silicon carbide coating over said felt layer.
Dependencies are inferred from the claim text.