Patent ID: 7799443
Filing Date: 2010-09-21
Classification: C23C,Y10T

Abstract:
1. A cutting tool insert comprising: a cermet body including a Co and/or Ni binder phase; and a coating deposited as a monolayer or as multiple and/or alternating layers of carbide, nitride or oxide deposited by CVD- and/or MTCVD-methods, wherein said cermet body includes more than 50 vol. % Ti-based carbonitride and less than 15 wt. % but more than 6 wt. % Co and/or Ni binder phase, wherein said cermet body has a hardness, measured as Vickers Hardness at 3 kg load (HV3), of >1650 HV3, and wherein said coating has: wherein at least one layer of the coating has a thickness of more than 6 μm, the at least one layer including at least one of carbide, nitride, carbonitride or carboxynitride of one or more of Ti, Zr and Hf or mixtures thereof, and the at least one layer is adjacent an alumina layer.