Title:
SINTERED BODY AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2018/216270
Kind Code:
A1
Abstract:
Provided is a sintered body comprising a first phase and a second phase, wherein the first phase is composed of cubic boron nitride particles, and the second phase is composed of a first material which is partially-stabilized ZrO2 in which Al2O3 particles are dispersed along grain boundaries and/or within grains. When two or more cubic boron nitride particles adjacent to and directly contacting each other and directly contacting at least a portion of the surface of the first phase are defined as a contact body, the second phase satisfies Dii=Di+(2×Σdk(k = 1 to n)) and [(Dii-Di)/Dii]×100≤50, where Di is the length of the entire circumference of the contact body, n is the number of contact points in direct contact with the cubic boron nitride particles, dk is the length of the contact points, and Σdk (k = 1 to n) is the total length of the contact points.
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Inventors:
ISHII AKITO (JP)
OKAMURA KATSUMI (JP)
OKAMURA KATSUMI (JP)
Application Number:
PCT/JP2018/005206
Publication Date:
November 29, 2018
Filing Date:
February 15, 2018
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
International Classes:
C04B35/5835; B23B27/14; B23B27/18; B23B27/20; C04B35/5831; C04B35/628; C04B35/645
Domestic Patent References:
| WO2016194398A1 | 2016-12-08 | |||
| WO2016068222A1 | 2016-05-06 | |||
| WO2016194416A1 | 2016-12-08 | |||
| WO2016171155A1 | 2016-10-27 | |||
| WO2016171155A1 | 2016-10-27 |
Foreign References:
| JP2013039668A | 2013-02-28 | |||
| JP2017104697A | 2017-06-15 |
Other References:
J. JPN. SOC. POWDER POWDER METALLURGY, vol. 60, no. 10, 2013, pages 428 - 435
J. JPN. SOC. POWDER POWDER METALLURGY, vol. 58, no. 12, 2011, pages 727 - 732
See also references of EP 3632878A4
J. JPN. SOC. POWDER POWDER METALLURGY, vol. 58, no. 12, 2011, pages 727 - 732
See also references of EP 3632878A4
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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