Anodizing is the process of increasing the thickness of oxide layer on metals to have increased resistance against corrosion and rusting. It also makes the metal surface more adhesive for paint and glue that further prevent corrosion. In this process, the target part of the metal surface is made the anode in an electrolytic solution, thus forming an extra layer of oxides on the surface of the target metal surface. This process has various uses.
Uses of Anodizing:
- Dyeing: Anodizing aluminium with sulfuric acid results in a porous aluminium surface that is well compatible paints. If one wants to produce color on the metal film itself, it is possible. A pulsating current and sulfuric electrolyte is needed during the process of anodizing, and this can be achieved.