Surface-coated member

Details Surface-coated member Surface-coated member

2007-02-06

2007-02-06

Turner, Archene (Department: 1775)

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

C051S307000, C051S309000, C428S325000, C428S472000, C428S698000, C428S701000, C428S702000

Reexamination Certificate

active

10780527

ABSTRACT:
The surface-coated member1is constituted by coating the surface of the base body2,made of such a material as cemented carbide or cermet, with the hard coating layer3that comprises at least one TiCN layer4and the Al2O3layer6formed on the surface of the TiCN layer4,wherein the TiCN layer4is constituted from stringer-like TiCN crystal grown in a direction perpendicular to the base body2and mean crystal width w1of the TiCN layer4on the Al2O3layer6side is made larger than mean crystal width w2on the base body2side. This surface-coated member, as a cutting tool, shows excellent breakage resistance and high wear resistance with a long service life, where strong adhesion force of the hard coating layer can be maintained without experiencing peel-off between the TiCN layer and the Al2O3layer even in cutting operations under harsh cutting conditions, such as intermittent cutting operation where the cutting edge is subject to strong impact.

REFERENCES:
patent: 5652045 (1997-07-01), Nakamura et al.
patent: 6251508 (2001-06-01), Ruppi
patent: 08-001408 (1996-01-01), None
patent: 08-187605 (1996-07-01), None
patent: 09-174304 (1997-07-01), None
patent: 10-109206 (1998-04-01), None
patent: 11-269650 (1999-10-01), None
patent: 2000-158205 (2000-06-01), None

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