What is galvanization? Why is only zinc used in galvanization?
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GALVANIZING:
In this method a thin layer of zinc is applied to prevent corrosion of iron or steel.for example,shinning iron nail,pins,etc.in this method corrosion of zinc occurs first because zinc is more electropositive than iron.after a few rainy seasons the zinc layer goes away and the inner iron gets exposed.then iron starts rusting.
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Definition :-
Galvanization is the process of applying a protective zinc coating to stell or iron, to prevent rusting .The most common method is hot -dip galvanizing, in which the parts are submerged in bath of molten zinc.
Q -why only zinc is used?
A - Zinc is more reactive than iron, it is used to protect it from corrosion Bcause when oxygen in the air reacts with the surface of zinc, a very dense and impermeable coating of zinc oxide is formed and it is physical barrier that protects the zinc surface from further attack.
Galvanization is the process of applying a protective zinc coating to stell or iron, to prevent rusting .The most common method is hot -dip galvanizing, in which the parts are submerged in bath of molten zinc.
Q -why only zinc is used?
A - Zinc is more reactive than iron, it is used to protect it from corrosion Bcause when oxygen in the air reacts with the surface of zinc, a very dense and impermeable coating of zinc oxide is formed and it is physical barrier that protects the zinc surface from further attack.
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