CUTTING TOOL MADE OF SURFACE-COATED TITANIUM CARBONITRIDE-BASED CERMET HAVING EXCEPTIONAL CHIPPING RESISTANCE

摘要

This cutting tool made of a surface-coated titanium carbonitride-based cermet is a surface-coated TiCN-based cermet cutting tool having, on the surface of a TiCN-based cermet substrate containing W and Mo, a first layer formed by vapor deposition of a Ti compound layer serving as a hard coating layer. A concentrated Mo layer having average thickness of 0.5-10 nm is formed at the interface of the TiCN phase of the substrate and the hard coating layer.