Title:
CUBIC BORON NITRIDE SINTERED COMPACT
Document Type and Number:
WIPO Patent Application WO/2021/010475
Kind Code:
A1
Abstract:
Provided is a cubic boron nitride sintered compact comprising cubic boron nitride particles in an amount of 20-80 vol.%, and a bonded phase in an amount of 20-80 vol.%. The bonded phase includes at least one selected from the group consisting of: compounds formed from titanium, one or both of nitrogen and carbon, and at least one element selected from the group consisting of zirconium, hafnium, group 5 elements of the period table, group 6 elements of the periodic table, and aluminum; and solid solutions derived from the aforementioned compound. When the bonded phase is observed using a transmission electron microscope, the area ratio of black regions in at least one crystal grain included in the bonded phase is 35-98%.
Inventors:
ISHII AKITO (JP)
OKAMURA KATSUMI (JP)
AMEMIYA MAYU (JP)
MOROGUCHI HIRONARI (JP)
KUKINO SATORU (JP)
OKAMURA KATSUMI (JP)
AMEMIYA MAYU (JP)
MOROGUCHI HIRONARI (JP)
KUKINO SATORU (JP)
Application Number:
PCT/JP2020/027902
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; C04B35/5831
Foreign References:
| JP2014214065A | 2014-11-17 | |||
| JP2007254249A | 2007-10-04 | |||
| JP2003236710A | 2003-08-26 | |||
| JPH09136203A | 1997-05-27 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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