Question

. Is the prevention of corrosion without affecting the natural colour and luster of metals possible? If so, suggest ways of achieving this also collect 5 samples of corrosion – prone & corrosion - resistant materials from your home and determine the efficiency of corrosion resistant materials collected.

Answer 1

The only way to prevent corrosion without affecting the color and lustre of the metal is cathodic protection. All the other techniques - corrosion inhibitors affect the properties of the metal.

The most common way to achieve cathodic protection is impressed current and sacrificial anode.