Title:
立方晶窒化硼素焼結体
Document Type and Number:
Japanese Patent JP6908798
Kind Code:
B2
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:
Akihito Ishii
Katsumi Okamura
Mayu Amamiya
Hiroya Morokuchi
Akatsuki Kukino
Katsumi Okamura
Mayu Amamiya
Hiroya Morokuchi
Akatsuki Kukino
Application Number:
JP2021503609A
Publication Date:
July 28, 2021
Filing Date:
July 17, 2020
Export Citation:
Assignee:
Sumitomo Electric Industries, Ltd.
Sumitomo Electric Hardmetal Corp.
Sumitomo Electric Hardmetal Corp.
International Classes:
C04B35/5831; C04B35/5835
Domestic Patent References:
| JP2014214065A | ||||
| JP2007254249A | ||||
| JP2003236710A | ||||
| JP9136203A | ||||
| JP2011189421A | ||||
| JP2011219360A | ||||
| JP2012096934A | ||||
| JP2019156692A | ||||
| JP2020514235A |
Foreign References:
| WO2021010474A1 |
Attorney, Agent or Firm:
Fukami patent office