Cutting tool
AssigneeSumitomo Electric Industries, Ltd.
InventorsHaruyo FUKUI, Nozomi TSUKIHARA, Anongsack PASEUTH, Toshihiro TABATA
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Abstract
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 Ti1-a-bAlaCebN, 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 AlcCr1-cN, c is 0.40 or more and 0.75 or less, and a and c satisfy a relationship of c>a.
Claims16
A cutting tool comprising a substrate and a coating film disposed on the substrate, wherein
- 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 Ti1-a-bAlaCebN,
- 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 AlcCr1-cN,
- c is 0.40 or more and 0.75 or less, and
- a and c satisfy a relationship of c>a.
A cutting tool comprising a substrate and a coating film disposed on the substrate, wherein
- the coating film includes a first A layer,
- the first A layer is composed of an alternate layer where a first unit layer and a third unit layer are alternately stacked,
- the first unit layer is composed of Ti1-a-bAlaCebN,
- a is 0.350 or more and 0.650 or less,
- b is 0.001 or more and 0.100 or less,
- the third unit layer is composed of AldCr1-d-eMeN,
- M is silicon or boron,
- d is 0.40 or more and 0.75 or less,
- e is more than 0 and 0.05 or less, and
- a and d satisfy a relationship of d>a.
Dependencies are inferred from the claim text.