Q. What is the optimum temperature for drying gold-plated parts? Is there a point where the temperature may become detrimental to the gold-plated surface? S.G.
A. I don’t think I have a good answer for you on this question. There are a number of things that have to be considered when drying gold-plated parts. For one thing, the base material can diffuse into the gold plate, giving you a discolored, unattractive appearance. In some cases, this can happen at only moderately elevated temperatures. This is why in many cases gold is not plated directly on the base material but on a barrier layer (such as nickel) that is plated prior to plating the gold layer. If the temperature used is too high, you may get staining, which is difficult to remove in many cases. If one of our readers has investigated this in more detail, I would appreciate hearing from you.