Title:
超硬合金複合材およびその製造方法ならびに超硬工具
Document Type and Number:
Japanese Patent JP6977776
Kind Code:
B2
Abstract:
Provided is a cemented carbide composite material including cemented carbide and non-cemented carbide having better high-temperature strength than conventional materials and capable of suppressing breakage and peeling of the composite material. A cemented carbide composite material includes: a cemented carbide part including WC-Co-based cemented carbide; a substrate part including metal that contains at least one of Ni and Co that accounts for 50 mass% or more in total. This cemented carbide composite material has an intermediate layer between the cemented carbide composite material and the substrate part, the intermediate layer containing components of the cemented carbide part and components of the substrate part. The intermediate layer includes a part having a gamma phase fraction of 80% or more and having Vickers hardness less than 700 HV.
Inventors:
Hiroshi Shiratori
Keiji Kawanaka
Hideki Ozeki
Tadashi Furuya
Keiji Kawanaka
Hideki Ozeki
Tadashi Furuya
Application Number:
JP2019546620A
Publication Date:
December 08, 2021
Filing Date:
September 20, 2018
Export Citation:
Assignee:
Hitachi Metals Co., Ltd.
International Classes:
C22C29/08; B22F3/10; B22F3/24; B22F7/00; B22F7/08; B23B27/14; C22C1/05; C22C19/05; C22C19/07
Domestic Patent References:
| JP2011523681A | ||||
| JP2008169419A | ||||
| JP2006175456A | ||||
| JP2013107187A | ||||
| JP2016196702A | ||||
| JP2004211162A | ||||
| JP2016108668A |
Foreign References:
| WO2012128708A1 | ||||
| US20160375493 |
Attorney, Agent or Firm:
Hiraki International Patent Office