Advantages
of corrosion​

Protection : Surface corrosion forms an oxide layer which further protects the inner metal form corrosion

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Corrosion prevents corrosion : Some metals like zinc are used as sacrificial anodes to prevent corrosion to other metal.

Galvanic corrosion : The principle on which primary batteries work.

Following are the advantages of corrosion: A layer of protection: A layer of oxide is formed in surface corrosion, which protects the inner metal from corrosion. Sacrificial anodes such as zinc is used as a preventive measure to stop corrosion of other metals.

Explanation:

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