Surface-coated hard material for cutting tools or...

Details Surface-coated hard material for cutting tools or... Surface-coated hard material for cutting tools or...

2004-11-17

2010-10-26

Turner, Archene (Department: 1784)

Stock material or miscellaneous articles

Composite

Of inorganic material

C051S307000, C051S309000, C428S216000, C428S336000, C428S698000, C428S699000, C428S701000, C428S702000, C428S704000

Reexamination Certificate

active

07820308

ABSTRACT:
The present invention provides a thin film coated on a cutting tool surface made of cemented carbides, cermets or ceramics. According to the present invention, an α-Al2O3thin film is deposited on a TiAlvBwCxNyOz (v+w+x+y+z=1, v, w, x, y, z≧0) thin film in a thickness of 2-15 μm, so that the ratio of TC (104) (denoting the texture coefficient of the (104) crystal plane of the polycrystalline α-Al2O3thin film) to TC (012) (denoting the texture coefficient of the (012) crystal) is more than 1.3. Cutting tools coated with such a thin film have improved wear resistance and adhesion.

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