Title:
セラミックス焼結体、及び切削工具
Document Type and Number:
Japanese Patent JP7393253
Kind Code:
B2
Abstract:
To provide a tool having both abrasion resistance and defect resistance, capable of performing high-speed machining of a steel material.SOLUTION: A ceramic sintered body 1 comprises hard particles P1, P2 comprising a Ti compound represented by (Ti,N)(C,N) (M is one or more species selected from Ta, Nb, and W) as a main component, and dispersed particles P3 consisting of one or more species selected from a nitride, an oxide, and an oxynitride of aluminum. In an observation area of 100 μm×100 μm in a cross section of the ceramic sintered body 1, at least either one of the hard particles P1, P2 segregates on a position whereon a M element solid-solved in each of the hard articles P1, P2 contacts a grain boundary G. Namely, an area R whereon a M element segregates, is present at least in either one of the hard particles P1, P2.SELECTED DRAWING: Figure 2
Inventors:
Keito Kojima
Ryoji Toyoda
Ryoji Toyoda
Application Number:
JP2020035532A
Publication Date:
December 06, 2023
Filing Date:
March 03, 2020
Export Citation:
Assignee:
NTK Cutting Tools Co., Ltd.
International Classes:
C04B35/58; B23B27/14; C04B41/87
Domestic Patent References:
| JP59232968A | ||||
| JP2001114562A | ||||
| JP2007137709A |
Foreign References:
| WO2019065372A1 | ||||
| WO2019220533A1 |
Attorney, Agent or Firm:
Yoshiyuki Inaba
Toshifumi Onuki
Akihiko Eguchi
Kazuhiko Naito
Toshifumi Onuki
Akihiko Eguchi
Kazuhiko Naito
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