Diamond/carbon/carbon composite useful as an integral dielectric heat sink and method for making same

摘要

A diamond/carbon/carbon composite (10) is provided comprising a carbon/carbon composite (12) having a polycrystalline diamond film (14) deposited thereon. The carbon/carbon composite (12) comprises a preform of interwoven carbon fibers comprising vapor grown carbon fibers. The preferred method of producing the composite involves chemical vapor infiltration of the pyrolytic carbon into the interstices of the preform, followed by microwave plasma enhanced chemical vapor deposition of the diamond film (14) on the carbon/carbon composite (12). The resulting diamond/carbon/carbon composite (10) is useful as an integral dielectric heat sink for electronic systems in spacecraft, aircraft and supercomputers due to its thermal management properties. Such a heat sink can be made by depositing metallic circuits on the diamond layer (14) of the diamond/carbon/carbon composite (10).