Title:
SURFACE-COATED BORON NITRIDE SINTERED TOOL
Document Type and Number:
WIPO Patent Application WO/2015/001902
Kind Code:
A1
Abstract:
A surface-coated boron nitride sintered tool, wherein at least a cutting edge portion is provided with a cubic boron nitride sintered compact and a coating film which is formed on the surface of the cubic boron nitride sintered compact. The coating film contains Si and comprises a layer (B) which is obtained by alternately laminating one or more compound (B1) layers and one or more compound (B2) layers having different compositions. If t1 is the average thickness of the compound (B1) layers and t2 is the average thickness of the compound (B2) layers, the ratio t2/t1 satisfies the relational expression 0.5 < t2/t1 ≤ 10.
Inventors:
TSUKIHARA NOZOMI (JP)
OKAMURA KATSUMI (JP)
SETOYAMA MAKOTO (JP)
OKAMURA KATSUMI (JP)
SETOYAMA MAKOTO (JP)
Application Number:
PCT/JP2014/064956
Publication Date:
January 08, 2015
Filing Date:
June 05, 2014
Export Citation:
Assignee:
SUMITOMO ELEC HARDMETAL CORP (JP)
International Classes:
B23B27/14; B23B27/20
Domestic Patent References:
| WO2012005275A1 | 2012-01-12 | |||
| WO2011129422A1 | 2011-10-20 | |||
| WO2010150335A1 | 2010-12-29 | |||
| WO2012005275A1 | 2012-01-12 |
Foreign References:
| JP2008254159A | 2008-10-23 | |||
| JP2008188689A | 2008-08-21 | |||
| JP2008534297A | 2008-08-28 |
Other References:
See also references of EP 3017897A4
Attorney, Agent or Firm:
Fukami Patent Office, p. c. (JP)
Patent business corporation Fukami patent firm (JP)
Patent business corporation Fukami patent firm (JP)
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