Multiple choice

Which of the following corrosion protection techniques does not involve metallic coating?

  1. Electroplating

  2. Galvanizing

  3. Anodizing

  4. Metal spraying
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Anodizing is an electrolytic passivation process, used to increase the thickness of the natural oxide layer on the surface of metal parts. While electroplating, galvanizing and metal spraying are methods of metallic coating for protection against corrosion.

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