Patent ID: 9662712
Date: 2017-05-30
CPC Classifications: B23B,B24D,Y10T

Claim:
1. A tool comprising: a. a substrate; b. a first coating in contact with the substrate, the first coating consisting essentially of hafnium nitride (HfN) and a second material selected from the group consisting of titanium nitride (TiN), zirconium nitride (ZrN), and zirconium carbonitride (ZrCN), wherein the first coating has a thickness of less than 1.5 μm and wherein the first coating comprises a surface devoid of cracks; c. a second coating over and in contact with the first coating, wherein the second coating consists essentially of a material selected from the group consisting of titanium carbide, titanium carbonitride, zirconium nitride, and zirconium carbonitride; and d. a third coating over and in contact with the second coating consisting essentially of aluminum oxide.