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suggest any coating method for preventing a metal from corrosion
There are many ways to remove corrosion from system. But correct approach depends on the type and reason of corrosion.
1- Cut off the connection of environment with substrate by any coating system.
2- Make a system which forces your substrate to act as cathode by connecting it with the material higher in EMF series or by providing external potential.
3- Decrease the corrosivity of environment by normalizing its PH.
There are two methods to prevent the corrosion:
1. Sacrificial anode
2. Impress current
