Is it possible to copper plate on an aluminum surface? L. T.
Yes you can copper plate on aluminum and it is done rather routinely. A typical sequence is as follows:
4.Dip in a 50% nitric acid solution. Depending on the aluminum alloy, hydrofluoric acid, sodium bifluoride, sulfuric acid or chromic acid may have to be used in conjunction with nitric acid.
6.Dip in a zincate bath (proprietary zincate solutions are best) for one minute
8.Strip the zinc coating using 50% nitric acid
10.Dip in the zincate solution again
12.Apply a copper strike using a cyanide based copper strike bath
14.Plate using a suitable copper plating bath
Additional information on the make-up of the copper strike and plating baths can be found in the Products Finishing Directory.