Patent ID: 7923130
Filing Date: 2011-04-12
Classification: C23C,Y10T

Abstract:
1. 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.