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. 02, 1991
Filed:
Jan. 09, 1989
Douglas W Townsend, Glen Burnie, MD (US);
Other;
Abstract
This invention relates to a process for electrowinning molten aluminum from alumina dissolved in molten fluoride salts which are essentially cryolite. More specifically the process relates to the treatment of aluminum reduction cell drained solid cathode surfaces to make them wetted by molten aluminum metal. This process deposits a coating composed of titanium diboride and titanium carbide on the solid cathode surfaces from supersaturated dissolved elements in electrowon aluminum. The electrowon aluminum wets the coating on the cathode. The coating makes the cathode surfaces resistant to erosion, chemical attack and penetration by the molten aluminum metal, sodium and cryolite electrolyte contained in that cell.