Science glossary film: Corrosion

Corrosion

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Commonly called rusting, the degrading of the exposed surface of materials, in particular metals.

The degrading of the exposed surface of materials, in particular metals. The rusting of iron is one example, and requires both water and oxygen to be present. In general, the more reactive the metal, the more quickly it corrodes. Aluminium is an exception: if corroded, the oxide of aluminium forms a protective layer over the aluminium surface, stopping further corrosion.

The rusting of iron is one example, and requires both water and oxygen to be present. In general, the more reactive the metal, the more quickly it corrodes. Aluminium is an exception: if corroded, the oxide of aluminium forms a protective layer over the aluminium surface, stopping further corrosion.

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