Patent ID: 8697229
Filing Date: 2014-04-15
Classification: B23C,C04B,C23C,Y10T

Abstract:
1. A hard coating film formed on a surface of a predetermined member and having excellent wear resistance and adhesion resistance, the hard coating film comprising: a three-layer structure composed of a third layer formed in contact with the surface of the predetermined member, a second layer formed on the third layer, and a first layer formed on the second layer to constitute the uppermost layer; the first layer being made of (Cr the second layer being made of AlCrN or AlCrDN wherein D is selected from the group consisting of either one element of Group IVa, Group Va and Group VIa, except Cr, of the Periodic Table of Elements and Y, or SiC (silicon carbide); and the third layer being made of nitride, carbon nitride or carbide of metals including of one element or more elements of Al, Ti, Zr, Hf, V, Nb, Ta, Cr and W.