Title:
CUBIC BORON NITRIDE SINTERED COMPACT, AND CUTTING TOOL
Document Type and Number:
WIPO Patent Application WO/2021/010472
Kind Code:
A1
Abstract:
This cubic boron nitride sintered compact includes cubic boron nitride particles, a binding phase, and an intervening phase. The intervening phase intervenes between the cubic boron nitride particles and the binding phase. The intervening phase includes aluminum, nitrogen, boron, and oxygen. The total of the average value of the atomic concentration of aluminum included in the intervening phase and the average value of the atomic concentration of nitrogen included in the intervening phase is 50.0 at.% or greater. The ratio of the average value of the atomic concentration of nitrogen included in the intervening phase to the average value of the atomic concentration of boron included in the intervening phase is greater than 1.00.
Inventors:
OKAMURA KATSUMI (JP)
AMEMIYA MAYU (JP)
ISHII AKITO (JP)
DEGUCHI YUKA (JP)
KUKINO SATORU (JP)
AMEMIYA MAYU (JP)
ISHII AKITO (JP)
DEGUCHI YUKA (JP)
KUKINO SATORU (JP)
Application Number:
PCT/JP2020/027899
Publication Date:
January 21, 2021
Filing Date:
July 17, 2020
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
SUMITOMO ELECTRIC HARDMETAL CORP (JP)
SUMITOMO ELECTRIC HARDMETAL CORP (JP)
International Classes:
B23B27/14; B23B27/20; C04B35/5831
Foreign References:
| JPS61141672A | 1986-06-28 | |||
| JP2019065513A | 2019-04-25 | |||
| JP2013234237A | 2013-11-21 | |||
| JP2006169080A | 2006-06-29 | |||
| JP2007070148A | 2007-03-22 | |||
| JP2019133023A | 2019-08-08 | |||
| JP2015044259A | 2015-03-12 |
Other References:
See also references of EP 4000777A4
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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