Patent ID: 6093482
Filing Date: 2000-07-25
Classification: C04B,F16D,Y10T

Abstract:
A method of making a carbon--carbon composite for friction products, comprising the steps of: alternatingly piling up layers of a mixture of carbon fibers, pitch powder and graphite powder and layers of one member selected from the group consisting of carbon fabrics, carbon-based prepregs and carbon-based, segmented prepregs one above the other so that there is provided a preform having a friction part containing the mixture of carbon fibers, pitch powder and graphite powder and a structure part supporting the friction part and containing a pack of alternating layers of the mixture and the one member selected from the group consisting of carbon fabrics, carbon-based prepregs and carbon based, segmented prepregs; heating and pressing the preform within a mold to obtain a green body; carbonizing the green body to prepare a carbonized body; impregnating the carbonized body with pitch powder and recarbonizing the impregnated body; and subjecting the impregnated and recarbonized body to chemical vapor infiltration with hydrocarbon gas.