Title:
SINTERED CBN
Document Type and Number:
WIPO Patent Application WO/2022/168655
Kind Code:
A1
Abstract:
Sintered cBN comprising cubic boron nitride particles and a binder phase, the sintered cBN being characterized in that: the binder phase contains a Ti-Al alloy having at least one element selected from Si, Mg and Zn and also contains Ti2CN and TiB2; when a peak intensity of Ti2CN which appears at 2θ of 41.9° to 42.2° in XRD is defined as ITi2CN and a peak intensity of the Ti-Al alloy which appears at the 2θ of 39.0° to 39.3° is defined as ITi-Al, an ITi2CN/ITi-Al value is 2.0 to 30.0 inclusive; and the average aspect ratio of regions in which Ti element and B element are overlapped each other in an element mapping image of Ti and B which is obtained by AES is 1.7 to 6.5 inclusive and the area ratio of the region is 0.025 to 0.120% inclusive.
Inventors:
YANO MASAHIRO (JP)
Application Number:
PCT/JP2022/002412
Publication Date:
August 11, 2022
Filing Date:
January 24, 2022
Export Citation:
Assignee:
MITSUBISHI MATERIALS CORP (JP)
International Classes:
C22C29/16; C04B35/5835
Foreign References:
| JP2007039329A | 2007-02-15 | |||
| JPS61201751A | 1986-09-06 | |||
| JPS61146763A | 1986-07-04 | |||
| JPS56156738A | 1981-12-03 | |||
| JPH07172919A | 1995-07-11 | |||
| JP2008517868A | 2008-05-29 | |||
| JP2021014845A | 2021-02-12 | |||
| JP5804448B2 | 2015-11-04 | |||
| JPH05310474A | 1993-11-22 | |||
| JP2013537116A | 2013-09-30 |
Attorney, Agent or Firm:
KIMURA Koichi et al. (JP)
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