发明授权
US07504149B2 Hard multilayer coating, and hard multilayer coated tool including the hard multilayer coating 有权
硬质多层涂层,硬质多层涂层工具,包括硬质多层涂层

Hard multilayer coating, and hard multilayer coated tool including the hard multilayer coating
摘要:
A hard multilayer coating that is to be disposed on a body, including: (a) a first coating layer disposed to be held in contact with the body, the first coating layer consisting of TiAlCrX1-aNa (wherein “X” represents carbon or oxygen, and “a” represents a mixed crystal ratio satisfying 0.5≦a≦1); (b) a second coating layer disposed on the first coating layer, the second coating layer being provided by a mixture layer consisting of TiAlCrX1-bNb (wherein “b” represents a mixed crystal ratio satisfying 0.5≦b≦1) and TiAl(SiC)X1-cNc (wherein “c” represents a mixed crystal ratio satisfying 0.5≦c≦1), or provided by a multilayer including a first sublayer consisting of the TiAlCrX1-bNb and a second sublayer consisting of the TiAl(SiC)X1-cNc, which are alternately superposed on each other; and (c) a third coating layer disposed on the second coating layer and constituting an outermost layer of the hard multilayer coating, the third coating layer consisting of TiAl(SiC)X1-dNd (wherein “d” represents a mixed crystal ratio satisfying 0.5≦d≦1).
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