发明公开
EP3308886A1 SURFACE-COATED CUTTING TOOL AND MANUFACTURING METHOD THEREFOR 审中-公开
表面涂层切削工具及其制造方法

SURFACE-COATED CUTTING TOOL AND MANUFACTURING METHOD THEREFOR
摘要:
A surface-coated cutting tool includes a base material and a coating formed on the base material. The coating includes an α-Al 2 O 3 layer. The α-Al 2 O 3 layer contains a plurality of α-Al 2 O 3 crystal grains and chlorine, and has a TC(006) of more than 5 in texture coefficient TC(hkl). The α-Al 2 O 3 layer includes lower and upper layers, the lower layer is located closer to the base material than the upper layer is, and the upper layer is located opposite to the base material across the lower layer, in a thickness direction of the α-Al 2 O 3 layer. The lower layer has a thickness of 1.0 µm. The upper layer has a thickness of 0.5 µm or more. The chlorine in the lower layer has a concentration distribution in which an atomic concentration C Cl of the chlorine decreases in a direction away from the base material, in a thickness direction of the lower layer.
公开/授权文献
信息查询
0/0