US 12,000,034 B2
Coated tool
Hayato Kubo, Satsumasendai (JP); Takahito Tanibuchi, Satsumasendai (JP); Yukihiro Shimogaki, Tokyo (JP); Takeshi Momose, Tokyo (JP); and Momoko Deura, Tokyo (JP)
Assigned to KYOCERA Corporation, Kyoto (JP); and THE UNIVERSITY OF TOKYO, Tokyo (JP)
Appl. No. 17/793,674
Filed by KYOCERA CORPORATION, Kyoto (JP); and THE UNIVERSITY OF TOKYO, Tokyo (JP)
PCT Filed Jan. 18, 2021, PCT No. PCT/JP2021/001489
§ 371(c)(1), (2) Date Jul. 19, 2022,
PCT Pub. No. WO2021/149642, PCT Pub. Date Jul. 29, 2021.
Claims priority of application No. 2020-006886 (JP), filed on Jan. 20, 2020.
Prior Publication US 2023/0073338 A1, Mar. 9, 2023
Int. Cl. C23C 14/06 (2006.01)
CPC C23C 14/0641 (2013.01) 14 Claims
OG exemplary drawing
 
1. A coated tool, comprising a base and a coating film located on the base,
the coated tool comprising:
a first surface,
a second surface adjacent to the first surface, and
a cutting edge located on at least a part of a ridge part of the first surface and the second surface,
wherein
the coating film comprises an AlTiN film;
the coating film has a first compressive stress σ11 in a first direction which is parallel to a surface of the base and intersects with the cutting edge at an angle of 90°, and a second compressive stress σ22 in a second direction which intersects with the first direction at an angle of 90°, and
the first compressive stress σ11 is different from the second compressive stress σ22.
 
6. A method for making a coated tool, the method comprising:
providing a base of the coated tool, the base comprising: a first surface, a second surface adjacent to the first surface, and a cutting edge located on at least a part of a ridge part of the first surface and the second surface; and
forming a coating film using chemical vapor deposition on at least part of the base, the coating film comprising an AlTiN film with a first compressive stress σ11 in a first direction which is parallel to a surface of the base and intersects with the cutting edge at an angle of 90°, and a second compressive stress σ22 in a second direction which intersects with the first direction at an angle of 90°, wherein the first compressive stress σ11 is larger than the second compressive stress σ22.