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What is Rhodium Plating Process for Black/Blue Finish about?

This patent describes a process and electrolytic bath for producing a rhodium-plated article with a black or blue color. The bath contains a conventional acid rhodium plating solution along with an additive such as an organocarboxylic acid, aromatic sulfonic acid, amine, gelatin, butynediol, or hypophosphite. Plating an article in this bath results in a rhodium plating with the desired black or blue color and mirror-like gloss.

Author

Dhandapani P

Language

EN