US 12,246,385 B2
Coated tool and cutting tool including the same
Yuusaku Sugawa, Chikushino (JP); Hirotoshi Ito, Satsumasendai (JP); Kenji Kumai, Satsumasendai (JP); Takanori Sugiyama, Satsumasendai (JP); and Tadashi Katsuma, Satsumasendai (JP)
Assigned to KYOCERA Corporation, Kyoto (JP)
Appl. No. 17/630,582
Filed by KYOCERA Corporation, Kyoto (JP)
PCT Filed Jul. 28, 2020, PCT No. PCT/JP2020/028795
§ 371(c)(1), (2) Date Jan. 27, 2022,
PCT Pub. No. WO2021/020367, PCT Pub. Date Feb. 4, 2021.
Claims priority of application No. 2019-138993 (JP), filed on Jul. 29, 2019.
Prior Publication US 2022/0250162 A1, Aug. 11, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. B23B 27/14 (2006.01); C23C 16/36 (2006.01); C23C 16/40 (2006.01)
CPC B23B 27/148 (2013.01) [C23C 16/36 (2013.01); C23C 16/403 (2013.01); B23B 2228/10 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A coated tool, comprising:
a base; and
a coating layer located on a surface of the base,
the coating layer comprising an intermediate layer comprising Ti and an Al2O3 layer,
wherein the Al2O3 layer is located in contact with the intermediate layer at a position further away from the base than the intermediate layer,
the intermediate layer comprises a plurality of first protrusions protruding toward the Al2O3 layer,
an average width of feet of the plurality of first protrusions is 10 nm or more but less than 50 nm, and an average height of the first protrusions is 10 nm or more but less than 60 nm,
at least one of the plurality of first protrusions is a composite protrusion comprising second protrusions protruding in a direction intersecting with a protruding direction of the first protrusions, and
a percentage of the composite protrusions in the plurality of first protrusions is 30% or less.