| 摘要 |
PROBLEM TO BE SOLVED: To provide a surface coated cutting tool where a hard coating film including carbonitride titanium film made of a columnar carbonitride titanium is formed on the surface of base material, preventing the occurrence of separation between the base material and the hard coating film even if high-speed and high feed cutting, heavy cutting and intermittent cutting are performed, and lengthening the life. SOLUTION: The titanium nitride film where titanium nitride coarse particles growing from the surface of the base material 2 toward the direction of film thickness are sprinkled in a crystal structure formed of titanium nitride fine particles 11 is formed between the base material 2 and the columnar carbonitride titanium film made of a columnar carbonitride titanium 9, thereby improving the adhesiveness between the base material 3 and the carbonitride titanium film. COPYRIGHT: (C)2007,JPO&INPIT
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