corrosion corrosion control

Corrosion is the destructive reaction of a metal with another material, e.g. oxygen, or in an extreme pH environment (either acidic or basic).

The corrosion product is a mix of oxide and salts of the original metal.

Corrosion is the primary means by which metals deteriorate. Most metals corrode when in constant contact with moisture in the air, acids, bases, salts and oils.

Corrosion specifically refers to any process involving the deterioration or degradation of any metallic element or compound. The best known case is that of the rusting of steel. Corrosion processes are usually electrochemical in nature, having the essential features of a battery. When metal atoms are exposed to an environment containing water molecules they can give up electrons. This effect can be concentrated locally to form a pit or, sometimes, a crack, or it can extend across a wide area to produce general wastage.

Generally corrosion can be divided into two categories: dry corrosion or wet corrosion.

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