| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a surface-coated cutting tool whose hard covered layer exhibits superior thermal resistance and deposition resistance in high speed cutting work of a hard-to-cut material such as stainless steel and heat-resistant steel. <P>SOLUTION: The surface-coated cutting tool is formed with a hard covered layer on the surface of a tool base substance, and the hard covered layer has an average layer thickness of 0.5 to 5μm and is constituted of a single layer of a complex nitride layer of Zr and Y which satisfies a composition formula: (Zr<SB POS="POST">1</SB>-<SB POS="POST">γ</SB>Y<SB POS="POST">γ</SB>)N (where, 0.01≤γ≤0.15, by atomic ratio). <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
