Title:
CERMET SINTERED BODY, CERMET TOOL AND CUTTING TOOL
Document Type and Number:
WIPO Patent Application WO/2024/014412
Kind Code:
A1
Abstract:
A cermet sintered body according to the present disclosure comprises: a first hard phase mainly composed of TiCN; a second hard phase that is a composite carbonitride solid solution of Ti and at least one of the metals of Groups 4, 5, and 6 of the periodic table; and a binder phase containing W and at least one of Co and Ni. The average particle size of the second hard phase in an internal region and the average particle size of the second hard phase in a surface region are each 0.35-0.6 μm. The strength σ1 in the surface region and the strength σ2 in the internal region are each 2300 MPa or more, and the strength ratio of σ1 to σ2 is 0.8 or more.
Inventors:
NOMIYAMA RYOMA (JP)
NEGISHI AYANO (JP)
KUMA YUICHIRO (JP)
NEGISHI AYANO (JP)
KUMA YUICHIRO (JP)
Application Number:
PCT/JP2023/025287
Publication Date:
January 18, 2024
Filing Date:
July 07, 2023
Export Citation:
Assignee:
KYOCERA CORP (JP)
International Classes:
C22C29/04; B23B27/14; B23B27/16; C04B35/58; C22C1/051
Domestic Patent References:
| WO2022085649A1 | 2022-04-28 | |||
| WO2017179657A1 | 2017-10-19 |
Foreign References:
| JP2006111947A | 2006-04-27 | |||
| JP2016135906A | 2016-07-28 | |||
| JP2019025559A | 2019-02-21 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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