What is anodising done in case of?

Anodising is the process of forming a thick oxide layer of aluminium. This aluminium oxide coat makes it resistant to further corrosion.

What is anodising?

Anodising is a process of electrolytic passivation to increase the natural oxide layer’s thickness on the surface of metal parts. This process converts the metal surface into a decorative, durable, corrosion-resistant, anodic oxide finish.

How anodising is done?

The process is done by immersing the aluminium into an acid electrolyte bath and passing an electric current through the medium. A cathode is mounted inside the anodizing tank; the aluminium acts as an anode so that oxygen ions are released from the electrolyte to combine with the aluminium atoms at the surface of the part anodised.


  • Protect satellites from the harsh environment of space.
  • Used in one of the world’s tallest buildings – the Willis Tower in Chicago, Illino

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