| 主权项 |
1. A cutting tool comprising:
a base including a hard alloy; and a coating layer located on a surface of the base, wherein the coating layer comprises at least one TiCN layer formed from Ti(Cx1Ny1Oz1) (0<x1≦1, 0<y1≦1, O≦z1≦1, x1+y1+z1=1), an Al2O3 layer and an outermost layer formed from Ti(Cx2Ny2Oz2) (0≦x2≦1, 0≦y2≦1, 0≦z2≦1, x2+y2+z2=1) which are laminated in order from a side of the base, and a content of Cl at a thickness-center position of the TiCN layer is higher than a content of Cl at a thickness-center position of the outermost layer and the content of Cl at the thickness-center position of the outermost layer is higher than a content of Cl at a thickness-center position of the Al2O3 layer in a glow-discharge emission spectrometry (GDS analysis). |
