Title:
SINTERED COMPACT AND CUTTING TOOL
Document Type and Number:
WIPO Patent Application WO/2023/188876
Kind Code:
A1
Abstract:
Provided are a sintered compact and a cutting tool that have excellent abrasion resistance, heat resistance, and defect resistance under high-speed processing. A sintered compact (2) comprises: hard particles in which the main component is TiN, TiC, TiCN, or (Ti, M)(C, N) (M represents at least one selected from elements (excluding Ti element) belonging to groups 4-6 in the periodic table); and a binding phase containing at least one of Co and Ni. The binding phase further contains at least one selected from Re, Ru, Mo, and W. The sintered compact (2) satisfies relational formula (1) when, in a surface region from the surface to a depth of 20 μm, Bs represents the proportion of the total percentage content (mass%) of Re, Ru, Mo, and W with respect to the total percentage content (mass%) of Co, Ni, Re, Ru, Mo, and W, and Bi represents the proportion of the total percentage content (mass%) of Re, Ru, Mo, and W with respect to the total percentage content (mass%) of Co, Ni, Re, Ru, Mo, and W in an internal region further inside the surface region. (1): Bs/Bi≥1.1
Inventors:
KUSHIBIKI KANSHI (JP)
KOJIMA YOSHITO (JP)
TOYODA RYOJI (JP)
KOJIMA YOSHITO (JP)
TOYODA RYOJI (JP)
Application Number:
PCT/JP2023/004750
Publication Date:
October 05, 2023
Filing Date:
February 13, 2023
Export Citation:
Assignee:
NTK CUTTING TOOLS CO LTD (JP)
International Classes:
C22C1/051; B22F3/24; B23B27/14; C22C29/04
Foreign References:
| JPH04187739A | 1992-07-06 | |||
| JPH05171335A | 1993-07-09 |
Attorney, Agent or Firm:
INABA, Yoshiyuki et al. (JP)
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