Patent ID: 7651792
Filing Date: 2010-01-26
Classification: C23C,Y10T

Abstract:
1. A multilayer hard film comprising at least one assemblage of a Layer A or a Layer B with a Layer C arranged alternately, wherein the Layer A is a hard film consisting of [(Nb 0.4<a<0.6, 0<d<1, and 0.4<x<1, wherein, the Layer B is a hard film consisting of [(Nb 0.4<a<0.6, 0<b+c<0.15, 0<d<1, and 0.4<x<1, and wherein the Layer C is a hard film consisting of (Nb 0.2≦A≦0.5, 0.15<B+C≦0.5, 0≦D≦1, and 0.4≦x≦1.