Corrosion

The gradual chemical attack on a material by the atmosphere, moisture, process, or other agents. In corrosive process applications, wetted components, such as impellers, wear rings, pressure casings, sealing elements, etc., are usually designed to resist corrosion.

See also Chloride Stress Corrosion; Corrosion Protection; Corrosion Resistance; Hot Corrosion; Intergranular Corrosion; Pitting.