Question

How can a layer of aluminium oxide on an aluminium object be made thicker? What is this process called?

Answer 1

The process of forming thick oxide layer on aluminum surface is called anodizing.

Answer 2

The oxide layer on aluminium foil is made thicker by anodising which improves the metal's corrosion resistance. In the process, the thickened oxide surface coating is coloured by using dyes. ...


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