How to Use Electroplating

Electroplating is the application of a thin layer of a noble metal such as copper, silver, gold or chromium on to a prepared surface of a reactive metal such as steel and aluminum through the process of electroplating. Electroplating is essential because it protects the coated metal from rust while still giving it a shiny appearance. Electroplating is an electrochemical process and will require both electrical and chemical energy in order for it to be achieved.

Things You'll Need

  • Spoon
  • Sandpaper
  • Hydrochloric acid/caustic soda
  • Glass jar
  • Beaker
  • Pliers
  • DC charger
  • Wire stripper
  • Crocodile clips
  • Copper sulphate
  • Water
  • Multimeter
  • Copper sheet
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Instructions

    • 1

      Prepare the surface of the spoon by using sandpaper to remove any contaminant that may have formed on its surface. In case the contaminant will not come off, immerse the spoon in a jar of hydrochloric acid to remove the contaminant. If the contaminant was oil or wax, insert the spoon in a jar of hot alkaline solution such as caustic soda (sodium hydroxide) to eliminate the oil or wax. The preparation process is essential because if the spoon is not cleared completely off its contaminants, the electroplating coating will not adhere properly.

    • 2

      Using a pliers and cut off the end of the DC charger which will be plugged into an electrical device. Pull apart and strip the two wound wires individually using the wire stripper. About one and a half inches of the exposed strip of wire is left after the stripping.

    • 3

      Create two terminals at the end of each stripped wire. Fix a crocodile clip to each end of the two stripped wires and tighten the crocodile clips properly using the pair of pliers.

    • 4

      Put approximately 15 ml of the copper sulphate solution in the glass beaker. Pour an amount of water on to the copper sulphate solution enough to cover about 4/5 of the spoon.

    • 5

      Check whether the two terminals have charge in them by connecting them to the multimeter. Disconnect one terminal of the stripped wire then plug the DC charger on the wall socket. If the multimeter does not take a reading, automatically this is the negative terminal. Unplug the charger on the wall and using paper labels, label the two crocodile clips as positive and negative.

    • 6

      Put both the spoon and the copper sheet in a standing position in the mixture of copper sulphate and water. Fix the positive crocodile clip on to the copper sheet and the negative one on the spoon ensuring that both clips do not get into contact with the solution.

    • 7

      Plug in the charger on to the wall socket and turn the switch to the on position. The electroplating process will now commence. This electroplating is a slow process since copper is not a very reactive metal. After about 8 to 10 minutes, a reddish brown coating will start forming on the spoon. Once the spoon has been completely coated, unplug the charger from the wall socket and remove the spoon. Sand the coating on the spoon using sand paper to achieve a smooth coating.

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