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Abstract

Carbon-carbon fiber composites suitable for use in aircraft brake discs are made by extruding an aqueous gelled mixture containing chopped carbon fibers and a binder-thickening agent into the form of an elongated ribbon wherein the fibers are aligned in the direction of fluid flow. The ribbon is then arranged into a spiral configuration to form a flat disc shaped article with the fibers oriented in the circumferential direction. The disc shaped article is dried, heated to a sufficiently high temperature to carbonize the binder in the mixture and then impregnated with a liquid carbonaceous binder followed by heating the article to at least a carbonizing temperature in order to densify the product.

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First Claim