1. Anodising is one of the applications of electrolysis.
2. It is a process of forming a thick oxide layer of aluminium. Aluminium develops a thin oxide layer when exposed to air. This aluminium oxide coat makes it resistant to further corrosion and abrasion. The resistance
can be improved by making the oxide layer thicker.
3. In this technique, aluminium article is used as an anode. Electrolyte used is dilute sulphuric acid . The anode reaction results in formation of a black coloured thin film of aluminium oxide on the surface of anode. By putting appropriate dyes in the electrolytic bath, colored surface with decorative finish can be achieved.
4. Kitchen articles like anodised pressure cookers, anodised pans and also frames of sliding windows are the applications of anodising techniques. Anodised name plates are another popular option.
