Title:
立方晶窒化硼素焼結体
Document Type and Number:
Japanese Patent JP6928197
Kind Code:
B2
Abstract:
A cubic boron nitride sintered material includes: more than or equal to 20 volume% and less than or equal to 80 volume% of cubic boron nitride grains; and more than or equal to 20 volume% and less than or equal to 80 volume% of a binder phase, wherein the binder phase includes first binder grains and second binder grains, each of the first binder grains and the second binder grains includes one compound composed of titanium, at least one first metal element selected from a group consisting of zirconium, hafnium, a group 5 element, a group 6 element in a periodic table, and aluminum, and one or both of nitrogen and carbon, in each of the first binder grains, a ratio of the number of atoms of the first metal element to a total of the number of atoms of the titanium and the number of atoms of the first metal element is more than or equal to 0.01% and less than 10%, in each of the second binder grains, this ratio is more than or equal to 10% and less than or equal to 80%, and in an X-ray diffraction spectrum of the cubic boron nitride sintered material, one or both of conditions 1 and 2 are satisfied.
Inventors:
Mayu Amamiya
Akihito Ishii
Katsumi Okamura
Hiroya Morokuchi
Akatsuki Kukino
Akihito Ishii
Katsumi Okamura
Hiroya Morokuchi
Akatsuki Kukino
Application Number:
JP2021503623A
Publication Date:
September 01, 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 |
Attorney, Agent or Firm:
Fukami patent office