The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 25, 1989
Filed:
Apr. 23, 1987
Serge Dallaire, Longueuil, CA;
Canadian Patents and Development Limited/Societe, Ottawa, CA;
Abstract
There is described a coating providing an anti-oxidant barrier for carbon based material against oxidation at high temperature (temperature higher than 500.degree. C.), more particularly for graphite electrodes used in electric arc furnaces. The coating comprises at least a first layer of metallic titanium or titanium alloy which is applied directly on the carbon-based material, e.g. graphite, and a second layer which comprises a mixture of silicon carbide and aluminum alloy, the second layer being applied on the first layer. This coating substantially extends the life of the carbon-based material. There is also disclosed a method of producing this coating by applying the two layers onto a carbon-based material such as graphite.