FORMATION OF DIAMOND FILM, PRODUCTION OF INDUSTRIAL TOOL COATED WITH THE DIAMOND FILM, AND THE TOOL COATED THEREWITH

摘要

PURPOSE: To perform the coverage of the substrate base with diamonds synthesized in gas phase with high adhesion to the substrate by adhesion of diamond particles on the substrate surface, spacing diamond particles from each other, exposing the particles and synthesizing the diamond film on the diamond particles in a specific embodiment. ;CONSTITUTION: Diamond particles 15 are adhered to the substrate 9 on its surface in a desired thickness. Then, the substrate is impregnated with a matrix of, for example, the same material. as that of the substrate, at least one of metallic or ceramic materials of high adhesion to the substrate 9 to form the intermediate layer 14. After the diamond grains in the intermediate layer 14 are exposed, a gas is fed to the substrate to be treated 9 to form a diamond layer 13 on the exposed diamond grains. This process largely improves the adhesion strength to extend the life of tools remarkably such as bites, drills and end mills utilizing the ultrahigh hardness and heat resistance of diamond.;COPYRIGHT: (C)1995,JPO