Patent ID: 9074279
Filing Date: 2015-07-07
Classification: C23C,Y10T

Abstract:
1. A hard laminar coating consisting of a plurality of films including two kinds of films in the form of a first film and a second film having respective different compositions and alternately laminated on a surface of a base structure, wherein said first film is an oxide or an oxynitride of (Ti 1-a B a ), while said second film is TiB 2 wherein an atomic ratio a in said first film satisfies 0.02≦a≦0.7, and a thickness of said first film is no less than 0.1 μm and no more than 5.0 μm, while a thickness of said second film is no less than 0.1 μm and no more than 5.0 μm, said hard laminar coating having a total thickness of no less than 0.2 μm and no more than 10.0 μm.