US 11,911,829 B2
Coated tool and cutting tool including same
Hirotoshi Ito, Satsumasendai (JP)
Assigned to KYOCERA CORPORATION, Kyoto (JP)
Appl. No. 17/298,024
Filed by KYOCERA Corporation, Kyoto (JP)
PCT Filed Nov. 27, 2019, PCT No. PCT/JP2019/046375
§ 371(c)(1), (2) Date May 28, 2021,
PCT Pub. No. WO2020/111123, PCT Pub. Date Jun. 4, 2020.
Claims priority of application No. 2018-223526 (JP), filed on Nov. 29, 2018.
Prior Publication US 2022/0097146 A1, Mar. 31, 2022
Int. Cl. B23B 27/14 (2006.01); C23C 28/04 (2006.01)
CPC B23B 27/148 (2013.01) [C23C 28/042 (2013.01); C23C 28/044 (2013.01); C23C 28/048 (2013.01); B23B 2222/04 (2013.01); B23B 2224/28 (2013.01); B23B 2224/32 (2013.01); B23B 2224/36 (2013.01); B23B 2228/105 (2013.01)] 5 Claims
OG exemplary drawing
 
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.