Question

why are alloys resistant to corrosion?

Answer 1

The corrosion resistance is a result of a very thin (about 5 nanometers) oxide layer on the steel's surface. This oxide layer is referred to as a passive layer since it renders the surface electrochemically passive in the presence of corrosive environments.

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Answer 2

Answer:

this is due to its light weight but also resistant to corrosion.Aluminium alloy contain almost no iron and without iron the metal can't actually rust but it does oxidize.

Explanation:

When the alloy is exposed to water ,a film of aluminium oxide forms quickly on the surface