Question

Define corrosion?

Answer 1

• Corrosion is the phenomenon in which metals deteriorate gradually in the presence of oxygen and air.
• It is an undesirable phenomenon that negatively affects the desirable properties of the metal.
• In the case of iron metal, it is called rusting.
• During the rusting of iron, the oxide layer formed on the iron articles which are reddish-brown in color called rust (${\mathrm{Fe}}_2{\mathrm{O}}_3.{\mathrm{xH}}_2\mathrm{O}$).