ABSTRACT
This chapter begins with some technical data explaining some of how and why corrosion occurs, and presents a series of examples that show some common problems and corrections. Corrosion is the deterioration of a metal, almost always due to of oxidation. One of the keys to understanding corrosion is to realize that it is the result of electrical currents and electrochemical reactions. Almost all corrosion requires that some moisture be present but there is dry corrosion. A more common example of direct conversion can happen with a barbecue grill with a cast iron grate. Many conditions affect corrosion rates including temperature, exposure time, moisture and liquid conductivity, pH, oxygen availability, solution contaminants, flow velocity, and surface conditions. Many industrial sulphuric acid storage tanks are made from carbon steel and, at room temperatures, 93% sulphuric acid steel initially corrodes incredibly rapidly. Uniform corrosion is the most common type of corrosion and probably causes 80% of the cost of all corrosion.
