what is corrosion explain it's advantages and disadvantages
Answers
Answer:
The natural process that causes the transformation of pure metals to undesirable substances when they react with substances like water or air is called corrosion.
Advantages :
Following are the advantages of corrosion:
i) Layer of protection: A layer of oxide is formed on the surface that is corrosion protects the inner metal from corrosion
ii) Sacrificial anodes such as zinc is used as a preventive measure to stop corrosion of other metals
iii) Galvanic corrosion: This kind of corrosion occurs when two different types of metals are in electrical contact in an electrolyte where the more active metal tends to corrode.
Disadvantages :
Following are the disadvantages of corrosion:
i)Lose of metal from the surface
ii) The physical appearance of a metal object changes
iii)The chemical properties of metal varies
iv)Lose of the efficiency of metallic machines
v) The life span of metallic objects decreases