Kühlkörper und seine Herstellung

摘要

A heatsink comprising: a substrate (26) of a sintered compact including Cu and W, and a thin diamond film layer (31) formed on a surface of said substrate (26), wherein the Cu content in said substrate is at least 5% by weight, and wherein the diffraction peak intensity of the (211) plane of W is at least 30 times the diffraction peak intensity of the (200) plane of Cu in an X-ray diffraction chart obtained by irradiating said thin diamond film (31) layer with an X-ray.