US 7,923,130 B2 · Surface-coated cutting tool

Abstract

A surface-coated cutting tool according to the present invention including a substrate and a coating film formed on the substrate is characterized in that the coating film includes a composite super multi-layer film obtained by alternately stacking one or more first super multi-layer film and one or more second super multi-layer film, the first super multi-layer film above is formed by alternately stacking one or more A1 layer and one or more B layer, the second super multi-layer film above is formed by alternately stacking one or more A2 layer and one or more C layer, each of the A1 layer above and the A2 layer above is composed of any of TiN, TiCN, TiAlN, and TiAlCN, the B layer above is composed of TiSiN or TiSiCN, and the C layer above is composed of AlCrN or AlCrCN.

Claims11

Dependent claims

A surface-coated cutting tool, comprising:

a substrate;
and
a coating film formed on the substrate;
said coating film including a composite super multi-layer film obtained by alternately stacking one or more first super multi-layer film and one or more second super multi-layer film,
said first super multi-layer film being formed by alternately, one by one, stacking two or more A1 layers and two or more B layers,
said second super multi-layer film being formed by alternately, one by one, stacking two or more A2 layers and two or more C layers,
each of said A1 layer and said A2 layer being composed of any of TiN, TiCN, TiAlN, and TiAlCN,
said B layer being composed of TiSiN or TiSiCN, and
said C layer being composed of AlCrN or AlCrCN.

6 more elements

Dependencies are inferred from the claim text.

Surface-coated cutting tool

Life of this patent

Surface-coated cutting tool

Life of this patent

Abstract

Claims11