Post by tushnajewelart on Feb 5, 2012 11:18:40 GMT -6
So do I .... but wanted to know if there were other alloys/metals used in the process of acquiring a gold-colour plating over the metal, thus reducing the cost of the plating? Or, is it only Gold metal used in it?
I know Chrome plate requires a pre-plating of copper, then a nickel coat and finally the chrome.
I found this using Google; looks like silver, then copper and nickel:
Gold plating of silver is used in the manufacture of jewelry. Like copper, silver atoms diffuse into the gold layer, causing slow gradual fading of its color and eventually causing tarnishing of the surface. This process may take months and even years, depending on the thickness of the gold layer. A barrier metal layer is used to counter this effect. Copper, which also migrates into gold, does so more slowly than silver. The copper is usually further plated with nickel. A gold-plated silver article is usually a silver substrate with layers of copper, nickel, and gold deposited on top of it.