anode dissolves and simultaneously on the wires the metal deposits and forms the coating. a metal coating can offer improved corrosion resistance, a better electrical conductivity, a good adherence to other materials, nicer aesthetics and so on. electro-deposition is mostly used to apply coatings of copper...
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sequences, each with its own metal colour. this division into colours has its roots in history. in earlier times, the value of the coins was equivalent to the value of the metal from which they were minted: gold was used for the coins of the highest denominations, silver for the next-highest, and copper...