Ultrathin laminated oxide coatings and methods

Details Ultrathin laminated oxide coatings and methods Ultrathin laminated oxide coatings and methods

B - Operations, Transporting

32

B

117/128, 117/85

B32B 15/04 (2006.01) B32B 7/02 (2006.01) C23C 16/40 (2006.01)

Patent

CA 1329897

ULTRATHIN LAMINATED OXIDE COATINGS AND METHODS Abstract A wear resistant article, such as a cutting tool. A hard ceramic or cemented carbide substrate is coated with a laminated oxide coating about 0.3-20 microns thick, having at least three ultrathin layers. Each layer is an oxide layer about 0.1-3 microns thick, predominantly of a different material than adjacent layers. The oxide or oxides of adjacent layers may be dispersed as discrete particles within one or more of the layers. A process for producing the article is also disclosed.

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