PURPOSE: To enhance the heat resistance of a composite material and to reduce the peeling and breakage caused by thermal stress by bonding a preform for a carbon fiber-reinforced metallic composite material to a carbon fiber/carbon composite material or the material obtained by forming a carbide on the surface of the composite material, etc.
CONSTITUTION: A carbon fiber/carbon composite material having 1×10-6 to 2×10-6 (1/°C) average thermal expansion coefficient at 30-600°C is prepared, and a preform for a carbon fiber-reinforced composite material having 0.5×10-6 to 10×10 (1/°C) average thermal expansion coefficient at 30-600°C and/or a carbon fiber-reinforced metallic composite material are prepared. A carbide is formed on the surface, etc., of the carbon fiber/carbon composite material. The preform and/or the carbon fiber-reinforced metallic composite material are bonded to the carbon fiber/carbon composite material.
NAKANO RYUHEI
KUDE YUKINORI
