HARD MULTILAYER COATING, AND HARD MULTILAYER COATED TOOL INCLUDING THE HARD MULTILAYER COATING

摘要

A hard multilayer coating including: (a) a backing layer which is to bedisposed on a bodyand which includes a TiAlN layer and a TiAlN+CrN mixture layer that arealternativelysuperposed on each other; and (b) a CrN layer which is disposed on the backinglayer andwhich provides an outer surface of the hard multilayer coating. The hardmultilayercoating may further include (c) an intermediate layer which is interposedbetween thebacking layer and the CrN layer. Also disclosed is a hard multilayer coatedtool includinga tool substrate as the body which is coated with the hard multilayer coating.