The rate of corrosion is directly proportional to temperature. This is because, the rate of chemical reaction and the rate of diffusion of the ions increases with rice in temperature. Hence the rate of corrosion increases with temperature. The rate of corrosion will be more, when the humidity in the environment in high. The moisture acts as a solvent for the oxygen in the air to produce the electrolyte, which is essential for setting up a corrosion cell.
The possibility of corrosion with respect to pH of the electrolytic solution and the electrode potential of the metal is correlated with the help of a pourbaix diagram. If the corrosion product is soluble in the corroding medium, the corrosion rate will be faster. Similarly, if the corrosion product is volatile the corrosion rate will be faster.
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