Quote:
Originally Posted by JBBOND
If I remember correctly, plating is first done by polishing the metal, than a copper layer is applied then the nickle and then the other top plate layer, all done by electro plating. Certainly for chrome plating, it was copper, nickle then the chrome so a silver wash would replace the chrome, though whether in this case it is actual silver or another metal finish that gives that colour.
Nickle plating is just the two layers, copper with the nickle on top.
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I'm not sure these badges are first copper plated, then nickel plated as the badges themselves contain a high percentage of copper already. Brass is 67% Copper and 33% Zinc, Gilding metal 86,7% Copper, 13,3% Zinc amd white metal or German silver, sometimes referred to as nickel-silver 64,5% Copper, 16,5% Zinc, 19,0% Nickel.
Difference between nickel plating and chrome plating is nickel goes straight onto copper based metals, and chorme, which is colourless, is always over nickel plating. Non copper metals need a layer of copper for the nickel to adhere to.
Rgds, Thomas.