Ultrathin laminated oxide coatings and methods

Stock material or miscellaneous articles – Composite – Of inorganic material

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Details

428701, 428432, B32B 1504, B32B 702

Patent

active

047496290

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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