March 3, 2024

The rate and extent of corrosion depends on: Nature of the environment Nature of the metal. S.No Environment based factors Metal based factors 1 Temperature. Position of metal in galvanic series. 2 Humidity. Relative area of electrode. 3 Presence of impurities in atmosphere. Over voltage. 4 Influence of pH. Purity of metal. 5 Nature of

There are two types of electrochemical Corrosion: Galvanic corrosion Differential aeration or Concentration cell corrosion Galvanic corrosion When two dissimilar metals are in contact with each other on the presence of aqueous solution or moisture, galvanic corrosion occurs. The more active metal (with high negative electrode potential and higher in the electrode potential and higher