Title:
SURFACE-COATED CUTTING TOOL
Document Type and Number:
WIPO Patent Application WO/2018/051939
Kind Code:
A1
Abstract:
Provided is a surface-coated cutting tool exhibiting excellent chipping resistance and wear resistance in intermittent cutting. A surface-coated cutting tool in which a hard coating layer including a TiAlN layer is provided on the surface of a tool substrate, wherein the composition of the TiAlN layer when expressed by the compositional formula (TixAl1-x)N has an average composition satisfying the expression 0.10 ≤ x ≤ 0.35 (where x is an atomic ratio), a high-Ti band-shaped region in which the composition of Ti components is high relative to the average composition x of Ti components in the TiAlN layer is present at least in a direction at an angle of 30 degrees or less with a line normal to the surface of the tool substrate, and preferably, the average composition X of Ti components in the high-Ti band-shaped region satisfies the expression (x + 0.01) ≤ X ≤ (x + 0.05), the average width W of the high-Ti band-shaped region is 30-500 nm, and the average area ratio St of the high-Ti band-shaped region is 3-50% by area.
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Inventors:
SATOU SYUN (JP)
OOGAMI TSUYOSHI (JP)
YAMAGUCHI KENJI (JP)
OOGAMI TSUYOSHI (JP)
YAMAGUCHI KENJI (JP)
Application Number:
PCT/JP2017/032635
Publication Date:
March 22, 2018
Filing Date:
September 11, 2017
Export Citation:
Assignee:
MITSUBISHI MATERIALS CORP (JP)
International Classes:
B23B27/14; B23B51/00; B23C5/16; C23C14/06; B23F21/10; B23F21/16
Foreign References:
| JP2016130343A | 2016-07-21 | |||
| JP2016064485A | 2016-04-28 | |||
| JP2014133267A | 2014-07-24 | |||
| JP2017064845A | 2017-04-06 | |||
| JP2015036189A | 2015-02-23 | |||
| JP2003211304A | 2003-07-29 |
Other References:
See also references of EP 3513890A4
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