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:
Jul. 13, 1993
Filed:
Dec. 30, 1991
Douglas W Townsend, Glen Burnie, MD (US);
Other;
Abstract
This invention relates to a process of electrowinning molten aluminum from alumina dissolved in molten fluoride salts which is essentially cryolite. More specifically the process relates to the treatment of aluminum reduction cell drained solid cathode surfaces to protect them while they are wetted by molten aluminum metal. This process produces aluminum wetted protective coatings composed of titanium diboride and titanium carbide and other refractory metal borides and carbides on top of a carbon-titanium diboride materials layer on the cathode surfaces from supersaturated dissolved elements in electrowon aluminum. The resulting protective coating is resistant to erosion, chemical attack, and penetration by molten aluminum metal, sodium, and cryolite electrolyte contained in that cell.