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:
Mar. 17, 1987
Filed:
Sep. 13, 1985
Vittorio de Nora, Nassau, BS;
Jurgen F Gauger, Geneva, CH;
Jean-Marie Fresnel, Thoiry, FR;
Iudita L Adorian, Geneva, CH;
Jean-Jacques R Duruz, Geneva, CH;
ELTECH Systems Corporation, Baco Raton, FL (US);
Abstract
In the electrolytic production of aluminum by electrowinning or electrorefining processes, cell components such as cathode current feeders which in use are normally covered with molten aluminum are made of a composite material of aluminum or an aluminum alloy or intermetallic compound with an aluminum oxycompound, usually alumina, and possibly containing minor amounts of additives such as borides carbides, nitrides or oxides. The composite material, which remains mechanically stable and electrically conductive at 1000.degree. C., may be prepared by hot pressing powders at 1000.degree.-1700.degree. C. possibly after surface treating the alumina to improve wettability by molten Al. The components are optionally coated, e.g. with TiB.sub.2. The composite materials are also useful as non-current carrying components, including separator walls, weirs, packing elements and baffles.