| 摘要 |
Provided is a cutting tool having a high oxidation resistance, a high wear resistance and a good defect resistance. The cutting tool (1) comprises a base body (2) and a coating layer (6), said coating layer (6) comprising Ti a Al b M d (C 1-x N x ) [wherein M represents at least one member selected from among Si, W, Nb, Mo, Ta, Hf, Cr, Zr and Y; and a, b, d and x satisfy the following requirements: 0.35‰¤a‰¤0.55, 0.3‰¤b‰¤0.6, 0‰¤d‰¤0.25, a+b+d=1 and 0‰¤x‰¤1], wherein the Al content of a droplet (7) on the coating layer (6) of a cutting face (3) is larger than the Al content of the composition of the coating layer (6), and the Ti content of a droplet (7) on a flank face (4) is larger than the Ti content of the composition of the coating layer (6). |
