| 摘要 |
PROBLEM TO BE SOLVED: To provide a surface-coated cutting tool having high adhesiveness of a coating on a base material, and having superior heat resistance, superior abrasion resistance and superior lubricity. SOLUTION: The surface coated cutting tool includes a base material and a coating formed on the base material. The coating is formed by the physical vapor deposition method, and includes at least one layer. At least one of the one or more layers is a first coating layer. The first coating layer contains Al and N, and its heat permeability ratio is 2,000-5,000 J sec<SP>-1</SP>m<SP>-1</SP>K<SP>-1</SP>. The first coating layer has a thickness of 0.2-5μm. The first coating layer has an amorphous area and a crystalline area in this order from the base material side. The amorphous area consists of an amorphous substance and has a thickness of 0.01-2μm. The crystalline substance area consists of a crystalline structure including a hexagonal structure. COPYRIGHT: (C)2011,JPO&INPIT
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