Title:
ｃＢＮ焼結体および切削工具
Document Type and Number:
Japanese Patent JP7377463
Kind Code:
B2
Abstract:
A cBN-based ultra-high pressure sintered body contains cBN particles and a binder phase. The binder phase contains at least one of a nitride or oxide of Al or a nitride, carbide, or carbonitride of Ti, and a metal boride having an average particle diameter of 20 to 300 nm is dispersed in an amount of 0.1 to 5.0 vol% in the binder phase. The metal boride includes a metal boride (B) containing at least one of Nb, Ta, Cr, Mo, and W as a metal component and containing no Ti and a metal boride (A) containing only Ti as a metal component. In a case where a ratio (vol%) of the metal boride (A) in the metal boride is represented by Va and a ratio (vol%) of the metal boride (B) is represented by Vb, a ratio of Vb/Va is 0.1 to 1.0.
Inventors:
Kadoma Seiji
Shiro Oguchi
Ryota Takei
Kenji Yumoto
Shiro Oguchi
Ryota Takei
Kenji Yumoto
Application Number:
JP2020516487A
Publication Date:
November 10, 2023
Filing Date:
February 27, 2020
Export Citation:
Assignee:
Mitsubishi Materials Corporation
International Classes:
C04B35/5831; B23B27/14; B23B27/20; C04B35/5835
Domestic Patent References:
| JP2014083664A | ||||
| JP2018145020A | ||||
| JP3131573A |
Foreign References:
| WO2012105710A1 | ||||
| WO2019087481A1 | ||||
| EP2559504A1 | ||||
| WO2011129422A1 |
Attorney, Agent or Firm:
Koichi Kimura
Yasushi Yamada
Shuichi Kageyama
Yasushi Yamada
Shuichi Kageyama