Patent ID: 11911829
Assignee: KYOCERA CORPORATION
Field: Surface technology, coating (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 0:
1. A coated tool, comprising:
a base; and
a coating layer located on the base, wherein
the coating layer comprises a first layer having a thickness of 1 μm or more located near the base, and a second layer comprising Al2O3 particles which is in contact with the first layer and is located more away from the base than the first layer, and
a difference (A2−A1) between an erosion rate A2 in the second layer and an erosion rate A1 in the first layer is 0.60 to −0.30 μm/g, wherein the erosion rate is obtained by collision of a liquid A in which 3 mass % of spherical Al2O3 particles having a mean particle diameter of 1.1-1.3 μm is dispersed in pure water.