Cutting tool
AssigneeSumitomo Electric Industries, Ltd.
InventorsHaruyo Fukui, Nozomi Tsukihara, Anongsack Paseuth, Toshihiro Tabata
Life of this patent
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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 AlaCrl-a-bCebN, a is 0.400 or more and 0.800 of less, b is 0.100 or less, the second unit layer is composed of TicSil-cN, and c is 0.200 or more and 0.990 or less.
Claims12
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 AlaCrl-a-bCebN,
- a is 0.400 or more and 0.800 or less,
- b is 0.001 or more and 0.100 or less,
- the second unit layer is composed of TicSil-cN,
- c is 0.200 or more and 0.990 or less, and
- in the first unit layer and the second unit layer adjacent to the first unit layer, a ratio λ1/λ2 of a thickness λ1 of the first unit layer to a thickness λ2 of the second unit layer is 1.5 or more and 5.0 or less.
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 AlaCrl-a-bCebN,
- a is 0.400 or more and 0.800 or less,
- b is 0.001 or more and 0.100 or less,
- the third unit layer is composed of TidSil-d-cBcN,
- d is 0.200 or more and 0.990 or less,
- e is more than 0 and 0.05 or less, and in the first unit layer and the third unit layer adjacent to the first unit layer, a ratio λ1/λ3 of a thickness λ1 of the first unit layer to a thickness λ3 of the third unit layer is 1.5 or more and 5.0 or less.
Dependencies are inferred from the claim text.