Patent ID: 9409238
Filing Date: 2016-08-09
CPC Classification: B23B,C22C,C23C,Y10T

Claim Text:
1. A cutting tool hard film disposed as a coating on a surface of a cutting tool, the cutting tool hard film being a multilayer film comprising: a first film layer comprising Ag a second film layer comprising one selected from the group consisting of a nitride, an oxide, a carbide, a carbonitride, and a boride, containing at least one element selected from the group consisting of group IVa elements, group Va elements, group VIa elements, Al, and Si, wherein: the first film layer and the second film layer being laminated alternately in two or more layers, a lamination cycle of the first film layer and the second film layer being within a range of 0.2 nm or more and 100 nm or less, and a total film thickness being within a range of 0.2 μm or more and 10.0 μm or less.