Title:
被覆切削工具
Document Type and Number:
Japanese Patent JP6844705
Kind Code:
B2
Abstract:
A hard coating film of a coated cutting tool of the present invention contains Al within a range of 70 at% to 80 at% and Ti within a range of 20 at% to 30 at% with respect to a total amount of metallic (including metalloid) elements, and contains Ar of 0.50 at% or less with respect to a total amount of the metallic elements (including metalloid) and nonmetallic elements. The hard coating film has a diffraction peak due to each of a TiN (111) plane, a TiN (200) plane, and a TiN (220) plane of an fcc structure and an AlN (100) plane and an AlN (002) plane of a hcp structure, in which the diffraction peak of the TiN (200) plane indicates a maximum intensity and an intensity of the diffraction peak due to the TiN (111) plane is next thereafter. The average crystal grain size of the hard coating film is within a range of 5 nm to 50 nm. In a cross-sectional observation, there are five or fewer droplets having an equivalent circle diameter of 1.0 µm or larger per 100 µm2.
Inventors:
Tomoya Sasaki
Application Number:
JP2019536412A
Publication Date:
March 17, 2021
Filing Date:
November 30, 2017
Export Citation:
Assignee:
Moldino Co., Ltd.
International Classes:
B23B27/14; B23C5/16; C23C14/06
Domestic Patent References:
| JP2008545063A | ||||
| JP2005344148A | ||||
| JP2011189419A |
Foreign References:
| WO2015186413A1 |
Attorney, Agent or Firm:
Yasushi Matsunuma
Mitsuo Teramoto
Fumihiro Hosokawa
Kazunori Onami
Mitsuo Teramoto
Fumihiro Hosokawa
Kazunori Onami