Correct option is C
Anodizing is an electrochemical process that increases the thickness of the natural oxide layer on the surface of
aluminium and
magnesium. This process improves corrosion resistance, wear resistance, and provides a surface for better adhesion of paints and dyes.
Key Points:
· The part to be anodized acts as the
anode in the electrochemical setup.
· Sulfuric acid is commonly used as the electrolyte.
· It is widely used in aircraft parts, consumer goods, and construction materials.
· Anodizing is different from galvanizing, which involves zinc coating.
