Title:
被覆切削工具
Document Type and Number:
Japanese Patent JP6969703
Kind Code:
B2
Abstract:
A coated cutting tool of the present invention has a hard coating on a surface of a base material. The hard coating is a nitride of Al, Cr, and Si in which Al is 50 atom% or more, Cr is 30 atom% or more, and Si is 1 atom% or more and 5 atom% or less. The hard coating contains 0.02 atom% or less of Ar, and the atomic ratio A and the atomic ratio B of nitrogen satisfy the relationship of 1.02 ≤ B/A ≤ 1.10, and a diffraction peak originating from the (111) plane of a face-centered cubic lattice structure shows the maximum intensity. In the cross-sectional observation of the hard coating, the number of droplets having an equivalent circle diameter of 3 µm or more is less than 1 per 100 µm2 . The surface of the hard coating has an arithmetical mean curvature Spc value at a peak point, as defined by ISO25178, of 5000 or less.
Inventors:
Tomoya Sasaki
Application Number:
JP2021508734A
Publication Date:
November 24, 2021
Filing Date:
December 10, 2019
Export Citation:
Assignee:
Moldino Co., Ltd.
International Classes:
B23B27/14; B23C5/16; C23C14/06
Domestic Patent References:
| JP201678131A | ||||
| JP2005344148A | ||||
| JP201632861A | ||||
| JP201245650A |
Foreign References:
| WO2019054289A1 | ||||
| WO2015141743A1 |
Attorney, Agent or Firm:
Yasushi Matsunuma
Mitsuo Teramoto
Fumihiro Hosokawa
Kazunori Onami
Mitsuo Teramoto
Fumihiro Hosokawa
Kazunori Onami