| 摘要 |
A surface coating cutter (1) comprising a substrate, and a coating formed thereon, characterized in that the coating includes a first coating of TiCN and a second coating of E type Al2O3, the first coating is interposed between the substrate and the second coating, and the second coating has compressive stress S1 on the cutting face (2) and tensile stress S2 on the flank (3), with the compressive stress S1 and the tensile stress S2 being defined by the following expression (I); 441MPa<=|S1-S2|<=3500MPa... (I).
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