| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a surface coated cutting tool having a hard coating layer exhibiting superior chipping resistance in intermittent cutting of heat resisting alloy. Ž<P>SOLUTION: As the hard coating layer, an innermost layer consisting of TiN, an inner layer consisting of high nitrogen TiCN, an internal adhesive layer consisting of TiCO, TiCNO, an intermediate layer consisting of α-type Al<SB>2</SB>O<SB>3</SB>, an external adhesive layer consisting of TiCO, TiCNO, and an outer layer consisting of a (Ti, Zr) (C, N) layer or a (Ti, Zr) C layer are formed by vapor deposition on the surface of a tool base body. Further, dry- or wet-blast treatment is applied to the surface of the hard coating layer to smoothen the surface of the hard coating layer and reduce residual stress. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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