Title:
焼結体
Document Type and Number:
Japanese Patent JP7452589
Kind Code:
B2
Abstract:
A sintered material includes a first phase and a second phase, wherein the first phase is composed of cubic boron nitride particles, the second phase is composed of a first material that is partially stabilized ZrO2in which Al2O3is dispersed in both or one of a crystal grain boundary and a crystal grain, the second phase is in contact with at least a portion of a surface of the first phase, and the following relational expressions are satisfied when more than or equal to two cubic boron nitride particles adjacent to and in direct contact with each other among the cubic boron nitride particles are defined as a contact body, Di represents a length of an entire perimeter of the contact body, n represents the number of contact locations at which the cubic boron nitride particles are in direct contact with each other, dkrepresents a length of each of the contact locations, and ∑dk(where k = 1 to n) represents a total length of the contact locations: Dii=Di+(2×∑dk(where k = 1 to n)); and [(Dii-Di)/Dii]×100≤50.
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Inventors:
Akihito Ishii
Katsumi Okamura
Katsumi Okamura
Application Number:
JP2022129692A
Publication Date:
March 19, 2024
Filing Date:
August 16, 2022
Export Citation:
Assignee:
Sumitomo Electric Industries, Ltd.
International Classes:
C04B35/5835; B23B27/14; B23B27/20
Domestic Patent References:
| JP2013039668A | ||||
| JP2302371A | ||||
| JP2282444A |
Foreign References:
| WO2016068222A1 | ||||
| WO2016194416A1 | ||||
| WO2016171155A1 | ||||
| WO2016194398A1 |
Attorney, Agent or Firm:
Patent Attorney Fukami Patent Office
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