SURFACE PROCESSING OF DIAMOND SUBSTRATE

摘要

PROBLEM TO BE SOLVED: To provide a process for the surface processing of a diamond substrate capable of keeping the flatness of the processing surface. SOLUTION: An iron plate 13' having a pattern is pressed against a polycrystalline diamond substrate 12 and heated at a high temperature to transfer the pattern to the surface of the polycrystalline diamond substrate 12. The heating is carried out in vacuum. Since the carbon atoms or molecules constituting the polycrystalline diamond substrate 12 are diffused into the iron plate 13' by the pressing and heating, the surface of the polycrystalline diamond substrate 12 is processed in the form of the surface pattern of the iron plate 13'.