Patent ID: 8501048

Claim:
A metal-graphite two-dimensionally thermally-conductive composite material comprising: 20 to 80% by volume of a scaly graphite powder; and a matrix selected from the group consisting of copper, aluminium and alloys thereof, wherein the scaly graphite powder in which a normal vector to a scaly surface is tilted at 20° or higher with respect to a normal vector to a readily heat-conducting surface of the metal-graphite two-dimensionally thermally-conductive composite material is 12% or less relative to a whole amount of the scaly graphite powder, the scaly graphite powder in which a normal vector to a scaly surface is tilted at 10° or less with respect to a normal vector to the readily heat-conducting surface is 55% or more relative to a whole amount of the scaly graphite powder, and the metal-graphite two-dimensionally thermally-conductive composite material has a relative density of 95% or higher.