Title:
COATED CUTTING TOOL
Document Type and Number:
WIPO Patent Application WO/2015/111752
Kind Code:
A1
Abstract:
A coated cutting tool according to one embodiment of the present invention includes a base material and a coating layer formed on the surface of the base material. The coating layer includes at least one α-type aluminum oxide layer. In a cross section of the α-type aluminum oxide layer substantially parallel to the surface of the base material, when the angle formed between a normal to the cross section and a normal to the (222) face of particles in the α-type aluminum oxide layer is defined as the orientation difference, the area of the particles in the α-type aluminum oxide layer having an orientation difference of 0-90° is defined as 100% of the cross section by area, and the area of the particles in the α-type aluminum oxide layer having an orientation difference of 0-90° is divided into sections at a pitch of 10°, then the total area Sa of the particles in the α-type aluminum oxide layer having an orientation difference of 20° or more to less than 30° is the maximum within the total of the areas of the nine sections at a pitch of 10°.
Inventors:
NAKAMURA TAKAAKI (JP)
Application Number:
PCT/JP2015/052170
Publication Date:
July 30, 2015
Filing Date:
January 27, 2015
Export Citation:
Assignee:
TUNGALOY CORP (JP)
International Classes:
B23B27/14; B23B51/00; B23C5/16; C23C16/40
Foreign References:
| JPH07505442A | 1995-06-15 | |||
| JP2004299021A | 2004-10-28 | |||
| JP2013111722A | 2013-06-10 | |||
| JP2013139064A | 2013-07-18 | |||
| JP2012512753A | 2012-06-07 | |||
| JP2008238393A | 2008-10-09 | |||
| JP2000144427A | 2000-05-26 | |||
| JP2004299021A | 2004-10-28 |
Other References:
See also references of EP 3100806A4
Attorney, Agent or Firm:
TANI & ABE, p. c. (JP)
Patent business corporation A valley and Abe patent firm (JP)
Patent business corporation A valley and Abe patent firm (JP)
Download PDF: