Electrolytic bath for the deposition of rhodium coatings

US4402802A · kind A · utility

Assignee

• Dequssa AG · DE

Inventors

• Erika Kreuter · Eisenberg (Pfalz), DE
• Werner Kuhn · Rodenbach, DE
• Wolfgang Zilske · Hanau, DE

Key dates

• Filing date: Jan 15, 1982
• Grant date: Sep 6, 1983
• Expiry date: Jan 15, 2002

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C25D3/52
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

There is described an electrolytic bath for the deposition of haze-free glossy rhodium coatings which furnish a white gold-like tint and low tension flims. This bath in addition to rhodium sulfate or phosphate, sulfuric acid and/or phosphoric acid also contains a sulfonic acid, especially an aromatic sulfonic acid, as for example, phenolsulfonic acid.