Cathodic Protection

Corrosion is a naturally occurring phenomenon commonly defined as the deterioration of a substance (usually a metal) or its properties because of a reaction with its environment.The tendency of a metal to corrode depends on the grain structure of the metal, its composition as formed during alloying, and the temperature or deformation of a single metal surface developed during fabrication.Corrosion occurs as a result of an electrochemical reaction driven by a potential difference between two an anode and a cathode, connected by an electronic path and immersed in the same electrolyte. In the case of uniform corrosion, a multitude of microscopic anodic and cathodic sites exist on the surface of the metal structure.

Cathodic cables are used for protection against electrolytic and galvanic corrosion of objects, for example pipelines and other submerged or buried metal structures.