Platinum Metals Rev., 1977, 21, (3), 89
Palladium for Electrical Contacts
The use of electrodeposited palladium instead of gold on electrical contacts appears economically attractive at the present time. At the Annual Technical Conference of the Institute of Metal Finishing held recently at Windermere, in a session devoted to noble metals, this was one of the topics discussed.
In a paper, “High Speed Plating Solutions for Selective Electroplating”, F. I. Nobel and R. T. Hill of Lea-Ronal dealt with the special plating solutions required to produce the desired results when plating both selectively and continuously. For palladium plating it has been established that proprietary solutions, at present being successfully used in barrel and rack plating operations to plate electrical contacts, can be modified for use in spot plating machines by increasing the metal content from about 8 to 10 grams per litre to 15 to 25 grams per litre. With the correct conditions 5 microns of sound bright palladium, as good as barrel plating, can be deposited in 15 seconds.