Editing Plating (section)

=== Rhodium plating ===
[[Rhodium]] plating is occasionally used on white gold, silver or copper and its alloys. A barrier layer of nickel is usually deposited on silver first, though in this case it is not to prevent migration of silver through rhodium, but to prevent contamination of the rhodium bath with silver and copper, which slightly dissolve in the [[sulfuric acid]] usually present in the bath composition.<ref>{{cite journal | doi = 10.1016/0376-4583(81)90029-7 | title = Rhodium — Electrodeposition and applications | year = 1981 | author = Pushpavanam, M | journal = Surface Technology | volume = 12 | pages = 351 | last2 = Raman | first2 = V | last3 = Shenoi | first3 = B | issue = 4}}</ref>