Title:
SURFACE-COATED MEMBER
Document Type and Number:
WIPO Patent Application WO/2013/002385
Kind Code:
A1
Abstract:
[Problem] To provide a surface-coated member in which the coating layer has high oxidation resistance and high chipping resistance.
[Solution] A surface-coated member, e.g., a cutting tool (1), that comprises a base (2) having a surface coated with a coating layer (6) which is composed of first layers (7) comprising (TiaAlbMd)N (wherein M is one or more elements selected from the metals in Groups 4, 5, and 6 of the periodic table, excluding Ti, and from Si and Y, 0.1≤a<0.4, 0.4≤b≤0.9, and 0≤d≤0.2) and second layers (8) comprising (TieAlfMg)N (wherein 0.4≤e≤1, 0≤f≤0.6, and 0≤g≤0.2), the layers (7) and the layers (8) having been alternately superposed. The coating layer (6) gives an X-ray diffraction pattern in which diffraction peaks pc assigned to cubic crystals coexist with diffraction peaks ph assigned to hexagonal crystals, and in which the diffraction angle (2θhm) of a diffraction peak ph assigned to hexagonal crystals has shifted from the diffraction angle (2θhs) of the X-ray diffraction peak assigned to hexagonal AlN according to the JCPDS card, toward the smaller-angle side in an amount that is larger by 0.1-5.0º than the difference between the diffraction angle (2θch) of an X-ray diffraction peak assigned to cubic TiN according to the JCPDS card and the diffraction angle (2θcm) of the diffraction peak pc assigned to cubic crystals.
Inventors:
ISHIKAWA KAZUNORI (JP)
ZHU YAOCAN (JP)
ZHU YAOCAN (JP)
Application Number:
PCT/JP2012/066756
Publication Date:
January 03, 2013
Filing Date:
June 29, 2012
Export Citation:
Assignee:
KYOCERA CORP (JP)
ISHIKAWA KAZUNORI (JP)
ZHU YAOCAN (JP)
ISHIKAWA KAZUNORI (JP)
ZHU YAOCAN (JP)
International Classes:
B23B27/14; C23C14/06
Foreign References:
| JP2010082704A | 2010-04-15 | |||
| JP2009101491A | 2009-05-14 | |||
| JP2010111952A | 2010-05-20 | |||
| JP2010247262A | 2010-11-04 |
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Claims: