Al infiltrated C–C hybrid composites

Carbon–carbon reinforced aluminum composites with different content of pyrolytic carbon and carbon fibers were manufactured. Porous carbon–carbon preforms in sandwich structure are composed of unidirectional T300 carbon fibers and carbon felt encapsulated and connected by Cpy sheaths. The characterizations of C–C/A1 composites were investigated. The obtained thermal conductivity (κ) reaches 128 W/m K and CTE of samples varies in a wide range. Mechanical properties are analyzed through three-point bending. The effects of graphitization are investigated. Graphitization of carbon–carbon preforms strengthens bonding between carbon fibers and Cpy sheaths so that the characterizations of composites are changed.