Title:
CEMENTED CARBIDE
Document Type and Number:
WIPO Patent Application WO/2023/188012
Kind Code:
A1
Abstract:
The present invention provides a cemented carbide which is composed of a hard phase and a binder phase, wherein: the hard phase contains tungsten carbide as a main component; the binder phase contains cobalt as a main component; with respect to the hard phase, the ratio D10/D90 of the 10% cumulative particle diameter D10 on the area basis to the 90% cumulative particle diameter D90 on the area basis is 0.30 or more; with respect to the binder phase, the ratio D10/D90 of the 10% cumulative particle diameter D10 on the area basis to the 90% cumulative particle diameter D90 on the area basis is 0.23 or more; the average particle diameter of the binder phase is 0.25 µm to 0.50 µm; and the average particle diameter of the hard phase is 0.30 µm to 0.60 µm.
Inventors:
ISHIDA TOMOYUKI (JP)
TANAKA YUKI (JP)
HIROSE KAZUHIRO (JP)
TANAKA YUKI (JP)
HIROSE KAZUHIRO (JP)
Application Number:
PCT/JP2022/015577
Publication Date:
October 05, 2023
Filing Date:
March 29, 2022
Export Citation:
Assignee:
SUMITOMO ELECTRIC HARDMETAL CORP (JP)
International Classes:
C22C29/08; C22C1/05
Foreign References:
| JP2006328452A | 2006-12-07 | |||
| JP2012052237A | 2012-03-15 | |||
| JP2020094277A | 2020-06-18 | |||
| JP2017171971A | 2017-09-28 | |||
| JP2009024214A | 2009-02-05 | |||
| JP2013060666A | 2013-04-04 | |||
| JP2021134364A | 2021-09-13 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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