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13 cards from this deck
Materials break down by reacting with oxygen & water
Oxygen and water
Corrosion of iron or steel
Fe2O3Fe_{2}O_{3}Fe2O3 (iron oxide), orange-brown colour
Both air AND water (not just one)
Natural protective coating keeps air & water away
Keep air and water away from metal surface
Grease, paint, electroplating
More reactive metal corrodes instead of protected metal
Magnesium blocks on steel ships
Covering iron with zinc
Zinc is more reactive than iron, so zinc corrodes first
Must be more reactive than metal being protected
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