Copper Plating On Aluminum

Ask an Expert From: Products Finishing, ,

Posted on: 11/1/2003

Question: Is it possible to copper plate on an aluminum surface?

Question:

Is it possible to copper plate on an aluminum surface? L. T.

Answer:

Yes you can copper plate on aluminum and it is done rather routinely. A typical sequence is as follows:

1.Degrease
2.Soak clean
3.Rinse
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.
5.Rinse
6.Dip in a zincate bath (proprietary zincate solutions are best) for one minute
7.Rinse
8.Strip the zinc coating using 50% nitric acid
9.Rinse
10.Dip in the zincate solution again
11.Rinse thoroughly
12.Apply a copper strike using a cyanide based copper strike bath
13.Rinse
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.

 



Suppliers | Products | Experts | News | Articles | Calendar | Process Zones

The Voice of the Finishing Industry Since 1936 Copyright © Gardner Business Media, Inc. 2014

Subscribe | Advertise | Contact Us | All Rights Reserved