Corrosion is an electrochemical reaction between a material and its environment which results in the deterioration or destruction of the material. Corrosion is not necessarily restricted to metals.

In most circumstances metallic corrosion requires two factors in order for a reaction to occur:

  1. At least one metal
  2. An electrolyte such as water, soil or concrete or a moist atmosphere

WHY DOES CORROSION OCCUR?

When we refine metal ores there are varying degrees of mechanical, electrochemical and thermal energy used to reduce it from ore to its metallic state. A large portion of the energy remains stored within the metal. Metallic corrosion is the release of this stored energy as electric current.