Hard film for cutting tools, cutting tool coated with hard film, process for forming hard film and target used to form hard film

Abstract

A hard film for cutting tools which is composed of (Ti1-a-b-c-d, Ala, Crb, Sic, Bd)(C1-eNe) 0.5≦a≦0.8, 0.06≦b, 0≦c≦0.1, 0≦d≦0.1, 0≦c+d≦0.1, a+b+c+d<1, 0.5≦e≦1 (where a, b, c, and d denote respectively the atomic ratios of Al, Cr, Si, and B, and e denotes the atomic ratio of N.)

Dependencies are inferred from the claim text.