Corrosion means degradation of material due to its reaction with its environment. Corrosion deteriorates physical properties of the metal. There are some advantages of corrosion.

a)Surface corrosion forms an oxide layer. It acts as a barrier for air and moisture and thereby preventing the inner metal from corrosion.

b)Some metals like zinc act as sacrificial anodes to prevent corrosion to other metals.

c)Galvanic corrosion is the principle that is used in batteries. Here, two metals carbon and zinc are intentionally mixed together in a electrolyte solution where zinc corrodes faster in order to generate electrical charge

Advantages of corrosion -

Protection : Surface corrosion forms an oxide layer which further protects the inner metal form corrosion.Corrosion prevents corrosion : Some metals like zinc are used as sacrificial anodes to prevent corrosion to other metal.Galvanic corrosion : The principle on which primary batteries work. In which one metal corrodes preferentially to another when both metals are in electrical contact, in the presence of an electrolyte.

There are some advantages of corrosion. Surface corrosion forms an oxide layer. It acts as a barrier for air and moisture and thereby preventing the inner metal from corrosion. Some metals like zinc act as sacrificial anodes to prevent corrosion to other metals. here are some benefits of corrosion. 1.protection:surface corrosion forms an oxide layer which further protects the inner metal from corrosion. corrosion prevents 2.corrosion:some metals like zinc are used as sacrificial anodes to prevent corrosion to other metal. 3.galvanic corrosion:the principle on which primary batteries work.in which one metal corrodes preferrentially to another when both metals are in electrical contact,in the presence of an electrolyte

there are some advantages of corrosion.surface corrosion forms an oxide layer.it acts as barreir for air and moisture and thereby preventing the inner metal from corrosion.some metals like zinc act as sacrificial anodes to prevent corrosion to another metals.