CEMENTED CARBIDE, CUTTING TOOL COMPRISING SAME, AND METHOD FOR PREPARING CEMENTED CARBIDE

Title:

CEMENTED CARBIDE, CUTTING TOOL COMPRISING SAME, AND METHOD FOR PREPARING CEMENTED CARBIDE

Document Type and Number:

WIPO Patent Application WO/2018/194018

Kind Code:

A1

Abstract:

This cemented carbide comprises: first hard-phase particles including WC; second hard-phase particles including a carbonitride containing at least Ti and Nb; and a metal bond phase including an iron group element, wherein the second hard-phase particles each include a granular core part and a peripheral part covering at least a portion of the core part, the core part includes a composite carbonitride represented by Ti1-x-yNbxWyC1-zNz (where the Y is 0-0.05 and the Z is 0.3-0.6), and the peripheral part differs in composition from the core part.

Inventors:

MICHIUCHI MASATO (JP)
FUKAE KOSUKE (JP)

Application Number:

PCT/JP2018/015683

Publication Date:

October 25, 2018

Filing Date:

April 16, 2018

Export Citation:

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Assignee:

SUMITOMO ELECTRIC INDUSTRIES (JP)

International Classes:

C22C1/05; B22F1/16; B22F7/00; B23B27/14; B23B51/00; B23C5/16; C22C29/00

Domestic Patent References:

WO2011136197A1

2011-11-03

Foreign References:

JP2014172157A

2014-09-22

Other References: