Patent ID: 7563502

Claim:
A fine carbon fiber/metal composite material, comprising a fine carbon fiber/metal composite material prepared by pressure impregnating a molded product containing fine carbon fibers having a fiber diameter of from 0.5 to 500 nm and a fiber length of at most 1,000 μm and having a hollow-structured central axis, with aluminum, magnesium, copper, silver or an alloy of such a metal, by molten metal forging, wherein the fine carbon fibers are covered with a phenolic resin, wherein the surface of the fine carbon fibers is covered with the phenolic resin in an amount of from 1 to 40 parts by weight per 100 parts by weight of the fine carbon fibers, and the volume fraction of the fine carbon fibers in the fine carbon fiber/metal composite material is from 20 to 70%, and which has a thermal conductivity of at least 150 W/(m·K) in a thickness direction, a coefficient of thermal expansion of from 4×10 −6 /° C. to 20×10 −6 /° C. and an elastic modulus of from 20 to 70 GPa in a plane direction.