Question

what is corrosion? with advantages and disadvantages​

Answer 1

Answer:

Corrosion is the process of rusting of any kind of metal or alloy due to the presence of moisture and air in it's surrounding.

Advantages of corrosion:-

1. Protection : Surface corrosion forms an oxide layer which further protects the inner metal form corrosion.
2. Corrosion prevents 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 preferentially to another when both metals are in electrical contact, in the presence of an electrolyte.

Disadvantages of corrosion:-

1. The main disadvantage of corrosion is the purity of the metal is lost. All the important properties of iron is lost.
2. Weakens material due to prolonged corrosive action.
3. Corrosion tends to vent in technical malfunctions in machines.