| 摘要 |
PURPOSE: A multilayer-coated cutting tool is provided to ensure improved peeling resistance performance without the hardness decrease of surface since different coating composition of areas A, B and C are formed on a base member. CONSTITUTION: A multilayer-coated cutting tool comprises a base member and a PVD coating part. The coating part comprises an area C, which is consists of at least two kinds of additional elements of nitride, carbide, boride or their mixture, which are selected from Si, Al, Y and four to six groups. The area C does not have the slope composition of the average content of Si. The area C has a irregular multilayer structure, in which different composition of individual layers X and Y alternately represent. The coating part further comprises a transition area B between an area A and the are C. The area A essentially does not have Si. The area B satisfies the slope composition of the average content of Si in order to increase the average content of Si towards the area C. |
