WHAT IS GALVANISING? AND WHY IRON IS GALVANISED WITH ZINC?
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Galvanized metal is a metal that has undergone the galvanizing process, which is a corrosion protection process for iron or steel in which the substrate is coated with zinc to prevent it from rusting. ... The zinc coating on the galvanized metal acts as a sacrificial anode.
The reason that the galvanizing process uses zinc instead of other metals is that zinc oxidizes and experiences acid corrosion “sacrificially” to steel. ... Iron in steel and oxygen in water form ferric or ferrous oxide, also known as rust.
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