Patent ID: 9064852
Filing Date: 2015-06-23
Classification: F28F,H01L

Abstract:
1. A thermally conductive composite material comprising: an aluminum or aluminum alloy member; discrete plugs of thermal pyrolytic graphite embedded within a plurality of apertures formed in the aluminum or aluminum alloy member; and an eutectic alloy interface produced by a process comprising a thin layer of silicon of an interface location of said aluminum or aluminum alloy member and said discrete plugs of thermal pyrolytic graphite and then using elevated temperature and pressure to bond said aluminum or aluminum alloy member and said discrete plugs of thermal pyrolytic graphite together at said eutectic alloy interface securing the plugs to the aluminum or aluminum alloy member and formed by the aluminum or aluminum alloy, the thermal pyrolytic graphite and silicon, total residual silicon material after elevated temperature diffusion bonding limited to a thin region of at most 50 microns around each graphite plug.