Title:
SURFACE-COATED CUBIC BORON NITRIDE SINTERED COMPACT TOOL
Document Type and Number:
Japanese Patent JP2017119343
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a surface-coated cubic boron nitride sintered compact tool comprising a hard coating layer having both of excellent wear resistance and excellent defect resistance.SOLUTION: In this surface-coated cubic boron nitride sintered compact tool, a hard coating layer comprising an alternating-layer structure of an A layer and a B layer is formed on the surface of a cBN substrate, the cBN substrate (sintered compact) comprises a Ti compound, WC, AlN, TiB, AlO, and cBN, the A layer has the composition (TiAl)N (where 0.4≤x≤0.7 by atomic ratio), the B layer has the composition (CrAlM)N (where 0.03≤y≤0.4 and 0≤z≤0.05 by atomic ratio, and M is at least one element selected from 4a, 5a, and 6a group elements in the periodic table, B and Si, excluding Cr), and the plastic deformation work ratio of the B layer is 0.35-0.50.SELECTED DRAWING: Figure 1
Inventors:
MAEKAWA TAKUYA
TAKAHASHI MASAKUNI
SATO SHUN
YUMOTO NORIJI
TAKAHASHI MASAKUNI
SATO SHUN
YUMOTO NORIJI
Application Number:
JP2016246479A
Publication Date:
July 06, 2017
Filing Date:
December 20, 2016
Export Citation:
Assignee:
MITSUBISHI MATERIALS CORP
International Classes:
B23B27/14; B23B27/20; B23B51/00; B23C5/16; C23C14/06
Attorney, Agent or Firm:
Kageyama Shuichi
Kurachi Yasuyuki
Yasushi Yamada
Kimura Koichi
Kurachi Yasuyuki
Yasushi Yamada
Kimura Koichi
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