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Corrosion is a natural process that causes metals and other materials to deteriorate due to chemical reactions with their environment. Learn about the different types of corrosion, such as rusting, pitting, and stress cracking, and how to prevent them with coatings, maintenance, and control. Corrosion is a destructive phenomenon wherein the metal surface deteriorates from chemical or electrochemical reactions. Learn about the 10 most common types of corrosion, their causes, effects, and methods to prevent them. Corrosion can be concentrated locally to form a pit or crack, or it can extend across a wide area, more or less uniformly corroding the surface. Because corrosion is a diffusion -controlled process, it occurs on exposed surfaces. Corrosion is the mechanism by which metals that have been processed revert to their normal oxidation states. This is a reduction-oxidation reaction in which the metal is oxidized by its environment, which is usually oxygen in the air. This reaction is favoured both electrochemically and spontaneously.
