Question

what is anodising. Explain

Answer 1

coat (a metal, especially aluminium) with a protective oxide layer by an electrolytic process in which the metal forms the anode.

"the anodized frames"



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Answer 2

Anodising

It is the process of forming a thick oxide layer on

the surface of aluminium. Aluminium develops

a thin layer of oxide, when left in air. This

oxide layer protective and prevents the metal

from further oxidation. This layer can be made

more thick by anodising. In this process, clean

aluminium article is taken as anode and dil.

H₂SO₄ as an electrolyte. When electric current is

passed, O₂ gas get liberated, which reacts with

metal aluminium to form a thicker layer of oxide

on its surface.