Title:
SURFACE-COATED CUTTING TOOL
Document Type and Number:
WIPO Patent Application WO/2014/034730
Kind Code:
A1
Abstract:
Provided is a coated tool in which a hard coating layer has excellent toughness and heat-blocking effects, the coated tool exhibiting excellent chipping resistance and defect resistance over a long period of use. The hard coating layer of this coated tool has an alternating stacked structure composed of chemically vapor-deposited area A and area B layers expressed by the compositional formula (Ti1-xAlx)(CyN1-y), and having a total average layer thickness of 1 to 10 µm. The area A layer satisfies the relationships 0.70 ≤ x ≤ 0.80 and 0.0005 ≤ y ≤ 0.005, and has an average particle width W of 0.1 µm or less and an average particle length L of 0.1 µm or less. The area B layer satisfies the relationships 0.85 ≤ x ≤ 0.95 and 0.0005 ≤ y ≤ 0.005, and has an average particle width W of 0.1 to 2.0 µm or less and an average particle length L of 0.5 to 5.0 µm. The topmost layer of the alternating stacked structure is an area A layer.
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Inventors:
TATSUOKA SHO (JP)
IWASAKI NAOYUKI (JP)
YAMAGUCHI KENJI (JP)
OSADA AKIRA (JP)
IWASAKI NAOYUKI (JP)
YAMAGUCHI KENJI (JP)
OSADA AKIRA (JP)
Application Number:
PCT/JP2013/073026
Publication Date:
March 06, 2014
Filing Date:
August 28, 2013
Export Citation:
Assignee:
MITSUBISHI MATERIALS CORP (JP)
International Classes:
B23B27/14; C23C16/36
Domestic Patent References:
| WO2012172895A1 | 2012-12-20 |
Foreign References:
| JP2004066421A | 2004-03-04 | |||
| JP2012166294A | 2012-09-06 | |||
| JP2011224715A | 2011-11-10 | |||
| JP2011516722A | 2011-05-26 | |||
| JP2011513594A | 2011-04-28 |
Other References:
See also references of EP 2891536A4
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
Masatake Shiga (JP)
Masatake Shiga (JP)
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