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Environmental Factors and Corrosion

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Questions and Answers

What is the critical humidity and how does it relate to the rate of corrosion?

The critical humidity is the relative humidity above which the rate of corrosion increases rapidly. It is a characteristic property of metals and alloys and is a function of pH.

What environmental factor is responsible for the increase in rate of wet corrosion with temperature?

Temperature

What are some of the corrosive gases present in the air near industrial areas?

Corrosive gases like C*O_{2}, H_{2}S, SO_{2}, fumes of HCI, H_{2}SO_{4}, etc. are present in the air near industrial areas.

How does the presence of impurities in the environment affect the rate of corrosion?

<p>The rate of corrosion is less in a clean environment compared to that in a polluted environment. Corrosive gases and inert suspended particles in the atmosphere contribute to the pollution and increase the rate of corrosion.</p> Signup and view all the answers

How does the humidity of the air affect the rate of corrosion?

<p>The rate of corrosion is directly proportional to humidity in the environment. Higher humidity leads to a higher rate of corrosion.</p> Signup and view all the answers