Valve metal electrode with valve metal oxide semi-conductive face

US3948751A · kind A · utility

Assignee

• Oronzio deNora Impianti Elettrochimici S.p.A. · IT

Inventors

• Giuseppe Bianchi · Roma, IT
• Vittorio de Nora · Freeport, BS
• Patrizio Gallone · Milano, IT
• Antonio Nidola · Milano, IT

Key dates

• Filing date: Oct 29, 1968
• Grant date: Apr 6, 1976
• Expiry date: Oct 29, 1988

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C25B11/061
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Describes chlorine resistant metal electrodes, preferably of valve metals such as titanium and tantalum, having coatings of mixed metal oxides, preferably valve metal oxides, which have been doped to provide semi-conducting surfaces on the electrodes, which coatings also have the capacity to catalyze chlorine discharge from the electrodes and to resist corrosive conditions in a chlorine cell.