| 摘要 |
A coated cutting tool with improved abrasion resistance and chipping resistance in which a cemented carbine substrate has a coating film formed on a surface of the substrate by chemical vapor deposition. The coating film includes a lower film with the average film thickness of 2 to 15 mum, formed on the surface of the substrate, and an aluminum oxide upper film, with an average film thickness of 1 to 10 mum, formed on a surface of the lower film. The lower film is an alternate laminated film formed by alternately stacking TiN films; each having the average thickness of 10 to 300 nm, and TiCN films each having the average thickness of 0.1 to 0.5 mum. |
