Process of making carbon-carbon composite material made from densified carbon foam
AssigneeAlliedSignal Inc.
InventorsNeil Murdie, Charles A. Parker, James F. Pigford, Dave Narasimhan, Frank Dillon
Life of this patent
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Abstract
A carbon-carbon composite material is made by providing an open-celled carbon foam preform, and densifying the preform with carbonaceous material. The open-celled carbon foam preform may be oxygen stabilized prior to carbonization, and the foam preform densified by CVD, HIP, PIC, VPI, pitch and resin injection, or any combination thereof. The carbon-carbon composite material can be heat treated to provide thermal management materials, structural materials, or a friction material for use in a brake or clutch mechanism.
Claims10
A process of manufacturing a carbon-carbon composite material, comprising the steps of providing an open-celled carbon foam preform from a mesophase pitch which includes increasing the temperature of the mesophase pitch to effect dissolution of gas and then decreasing the temperature before foaming the mesophase pitch, the foam preform being graphitizable, and densifying the preform with carbonaceous material to provide the carbon-carbon composite material.
A process of manufacturing a carbon-carbon composite friction material, comprising the steps of providing an open-celled carbon foam preform from a mesophase pitch which includes increasing the temperature of the mesophase pitch to effect dissolution of gas and then decreasing the temperature before foaming the mesophase pitch, the foam preform being graphitizable, and densifying the preform with carbonaceous material to provide the carbon-carbon composite friction material.
Dependencies are inferred from the claim text.