发明公开

CUTTING TOOL
摘要:
A cutting tool is a cutting tool comprising a substrate and a coating film disposed on the substrate, in which the coating film includes a first layer, the first layer is composed of an alternate layer where a first unit layer and a second unit layer are alternately stacked, the first unit layer is composed of Ti 1-a-b Al a Ce b N, a is 0.350 or more and 0.650 or less, b is 0.001 or more and 0.100 or less, the second unit layer is composed of Ti c Si 1-c N, and c is 0.20 or more and 0.99 or less.
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