Multilayer coating excellent in wear resistance and heat...

Details Multilayer coating excellent in wear resistance and heat... Multilayer coating excellent in wear resistance and heat...

2007-01-30

2007-01-30

Turner, Archene (Department: 1775)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S212000, C428S336000, C428S697000, C428S698000, C428S699000, C428S702000

Reexamination Certificate

active

11174551

ABSTRACT:
A multilayer coating according to the present invention comprises an alumina coating formed, directly or through an intermediate layer, on a hard coating composed of a metallic compound formed on the base material, and the Vickers hardness of the hard coating after alumina coating formation being 22 GPa or more. The multilayer coating is excellent in adhesion between a hard coating and an alumina coating and capable of exhibiting excellent wear resistance and heat resistance over a long period.

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