Question

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Aluminium is oxidised by atmospheric oxygen but does not rust like iron? Why?

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Answer 1

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Aluminium does not rust or corrode, because its surface is protected by a protective layer of aluminium oxide. This prevents the metal below from coming into contact with air (containing oxygen). Unlike rust, which can flake off the surface of iron and steel objects, the layer of aluminium oxide does not flake off.

Answer 2

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Aluminium does not rust or corrode, because its surface is protected by a protective layer of aluminium oxide.

This prevents the metal below from coming into contact with air (containing oxygen).

Unlike rust, which can flake off the surface of iron and steel objects, the layer of aluminium oxide does not flake off.

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