Decorative Gold Substitute

Ask an Expert From: Products Finishing, ,

Posted on: 9/1/2003

Question: Can you recommend a non-gold containing alloy that can be plated as a gold substitute?

Question:

Can you recommend a non-gold containing alloy that can be plated as a gold substitute? Obviously, it should have the appearance of gold and be suitable as an undercoat for a gold layer. The application is decorative. S.C.

Answer:

This seems to be the month for questions regarding bronze plating baths! As it turns out, there is a bronze plating bath that will give you a gold-like color and is suitable as an undercoat for gold. The formulation is as follows:

Component Concentration
Sodium cyanide 8-9 oz/gal
Copper cyanide 4 oz/gal
Sodium stannate 1.5 oz/gal
Sodium hydroxide 1.5 oz/gal
Rochelle salts 6.0-6.5 oz/gal

The bath should contain between 9-12% tin and should be operated at 150-160F. Copper anodes are used, and varying the amount of copper and tin in the plating bath controls the color.


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