Stock material or miscellaneous articles – Composite – Of inorganic material
Patent
1987-01-20
1988-06-07
Swisher, Nancy A. B.
Stock material or miscellaneous articles
Composite
Of inorganic material
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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Gindraux Gilbert
Hintermann Hans E.
Sarin Vinod K.
Craig Frances P.
GTE Laboratories
Swisher Nancy A. B.
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