Title:
COMPOSITE MEMBER AND CUTTING TOOL
Document Type and Number:
WIPO Patent Application WO/2017/135243
Kind Code:
A1
Abstract:
The purpose of the present invention is to achieve improvement in the joining strength of a composite member obtained by joining together WC-based cemented carbides via joining members each formed from pure Ti foil or Ti alloy foil. Provided are a composite member and a tool made of the composite member. In the composite member, WC-based cemented carbide members are joined together with a joining section and modified layers interposed therebetween, and joining members each formed from pure Ti foil or Ti alloy foil are joined together by solid-state diffusion, wherein: the joining section has a component composition in which not less than 50 atom% of Ti are contained and the remaining portion contains at least W, C, and Co; in binder phases which are adjacent to the joining section and which are in the vicinity of the interfaces of the respective WC-based cemented carbide members, the modified layers each having an average width of 0.2-5.0 µm are formed; and each of the binder phases of the modified layers has a composition formed of 5-20 atom% of W, 5-20 atom% of C, and the remaining portion of 60-90 atom% of Co and inevitable impurities.
Inventors:
IGARASHI MAKOTO (JP)
FUJIWARA KAZUTAKA (JP)
FUJIWARA KAZUTAKA (JP)
Application Number:
PCT/JP2017/003390
Publication Date:
August 10, 2017
Filing Date:
January 31, 2017
Export Citation:
Assignee:
MITSUBISHI MATERIALS CORP (JP)
International Classes:
B22F7/06; B23B27/14; B23B51/00; B23C5/16; B23K20/00; C22C14/00; C22C29/08
Foreign References:
| JP2015182161A | 2015-10-22 | |||
| JPH08168905A | 1996-07-02 |
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