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12 cards from this deck
Process where metals deteriorate via chemical reactions with environment
Rusting
Oxygen and water
Iron oxide
Reduces structural integrity
Creates protective barrier preventing environmental contact
Coating metal with thin layer of another metal using electrical current
Barrier prevents moisture and oxygen contacting metal
Aluminium
Inert - doesn't react further with environment
Coating metal with more reactive metal like zinc
Zinc corrodes first, protecting underlying iron from rusting
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