Title:
表面被覆立方晶窒化ホウ素焼結体工具
Document Type and Number:
Japanese Patent JP6850980
Kind Code:
B2
Abstract:
The present invention is directed to a surface-coated cubic boron nitride sintered material tool including a cBN substrate and a hard coating layer formed on a surface of the cBN substrate and having an alternate laminated structure of A layer and B layer. A peak of the grain size distribution of cBN grains in the cBN sintered material is present within a range of a grain size from 0.50 to 1.00 µm. The A layer has a composition of (Ti 1-x Al x )N(0.4¤x¤0.7 in an atomic ratio). The B layer has a composition of (Cr 1-y-z Al y M z )N (0.03¤y¤0.6 and 0¤z¤0.05 in an atomic ratio). An X-ray diffraction peak of a (200) plane is present at a position of a diffraction angle of 43.6 plus or minus 0.1 degrees, and a plastic deformation work ratio of the B layer is 0.35 to 0.50.
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Inventors:
Takuya Maekawa
Masanori Takahashi
Sato Shun
Noriyoshi Yumoto
Masanori Takahashi
Sato Shun
Noriyoshi Yumoto
Application Number:
JP2017035010A
Publication Date:
March 31, 2021
Filing Date:
February 27, 2017
Export Citation:
Assignee:
Mitsubishi Materials Corporation
International Classes:
B23B27/14; B23B27/20; B23B51/00; B23C5/16; C04B35/5831; C04B41/87; C04B41/89; C23C14/06
Domestic Patent References:
| JP2016026893A | ||||
| JP2011506115A | ||||
| JP2014083664A | ||||
| JP2014091169A | ||||
| JP2017042906A |
Foreign References:
| WO2006070730A1 |
Attorney, Agent or Firm:
Kageyama Shuichi
Kurachi Yasuyuki
Yasushi Yamada
Kimura Koichi
Kurachi Yasuyuki
Yasushi Yamada
Kimura Koichi