Question

What is anodizing done in case of?

Answer 1

Anodizing:

• “Anodizing is a process of forming a thick oxide layer of aluminum. Aluminum develops a thin oxide layer when exposed to air.”
• This aluminum oxide coat makes it resistant to further corrosion.

The procedure of anodizing:

• During anodizing, a clean aluminum article works as an anode and is electrolyzed with dilute sulphuric acid$\left({\mathrm{H}}_2{\mathrm{SO}}_4\right)$.
• The oxygen $\left({\mathrm{O}}_2\right)$gas evolved at the anode reacts with aluminum to make a thicker protective oxide layer.
• This oxide layer can be dyed easily to give aluminum articles an attractive finish.