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Corrosion
Corrosion in metals
Term | Definition |
---|---|
Corrosion | when a metal is attacked by air, water, or other substances in its surroundings |
The more reactive the metal is… | the more readily it corrodes |
What does rusting involve? | Air and water |
How to prevent rusting | coat metal with something to keep out air and moisture |
Protection from rusting | paint, grease, plastic, another metal (zinc=galvanization), sacrificial protection |
Does Aluminium corrode? | It starts to but soon stops, due to the even coat of aluminium oxide which acts as a seal preventing air and moisture to further corrode the metal |