Coated cutting tool
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United States of America Patent
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Apr 23, 2024
Grant Date -
Jul 7, 2022
app pub date -
Apr 27, 2020
filing date -
May 9, 2019
priority date (Note) -
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Abstract
Provided is a coated cutting tool, which includes a hard coating film containing a layer (b) formed of a nitride or a carbonitride, a layer (c) which is a layered coating film formed by alternately layering a nitride or carbonitride layer (c1) that contains 55 atom % or more of Al, Cr having a second highest content percentage, and at least B and a nitride or carbonitride layer (c2) that contains 55 atom % or more of Al and Ti having a second highest content percentage, each layer having a film thickness of 50 nm or less. A peak intensity Ih ascribable to a hcp (010) plane of AlN in the layer (c) and the total peak intensity Is ascribable to a plurality of predetermined crystal phases satisfy a relationship of Ih×100/Is≤15.
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