Question

Why does aluminium not undergo corrosion but iron does?

Answer 1

Because iron is more reactive than aluminum and aluminum comes in the category of least reactive metals , that react with only few things.

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Answer 2

Explanation:

Due to a protective layer of aluminium oxide that is present on its surface naturally, aluminium does not rust or corrode. By doing this, the metal below is shielded from touch with the air (containing oxygen). Aluminum begins to corrode and develops an oxide layer that is resistant to oxygen and water. On the other hand, iron creates an oxide layer that is porous, allowing oxygen and water to pass through while continuing to corrode the iron beneath.

The layer of aluminium oxide does not peel off like rust, which can come off the surface of iron and steel Contrarily, iron creates a porous oxide layer that allows oxygen and water to pass through while continuing to corrode the iron beneath.

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