Anodizing is a process which places a protective coating of oxide on the surface of a metal. This is done by putting the metal, usually Aluminium, into a special liquid solution and placing an electric current through the solution. This process makes the metal resistant to corrosion.


Research how anodising is done and the processes used to anodise aluminium. Write your findings. You could also visit an anodising plant near you if one is available. Don't forget to take notes!

Try the following basic experiment.

anodizing example drawing

An oxide coating will form on the anode.







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