Patent ID: 7504149

Claim:
A hard multilayer coating that is to be disposed on a body, comprising: a first coating layer disposed to be held in contact with the body, said first coating layer essentially consisting of TiAlCrX 1-a N a (wherein “X” represents one of carbon and oxygen, and “a” represents a mixed crystal ratio satisfying 0.5≦a≦1); a second coating layer disposed on said first coating layer and provided by a mixture layer essentially consisting of TiAlCrX 1-b N b (wherein “X” represents said one of carbon and oxygen, and “b” represents a mixed crystal ratio satisfying 0.5≦b≦1) and TiAl(SiC)X 1-c N c (wherein “X” represents said one of carbon and oxygen, and “c” represents a mixed crystal ratio satisfying 0.5≦c≦1); and a third coating layer disposed on said second coating layer and constituting an outermost layer of said hard multilayer coating, said third coating layer essentially consisting of TiAl(SiC)X 1-d N d (wherein “X” represents said one of carbon and oxygen, and “d” represents a mixed crystal ratio satisfying 0.5≦d≦1).