Electrolysis is a naturally occurring phenomenon resulting in the corrosion of metal surfaces.
Electrochemical corrosion (electrolysis) is brought about by the flow of ions from negatively charged metals to positively charged metals when they are connected in the same environment. The resulting electromotive force appears as voltage. This voltage is proportional to the flow of the aforementioned ions and its increase directly affects the intensity of the electrolysis phenomenon.
The naturally occurring phenomenon of electrolysis manifests itself in metal structures, bridges, storage tanks and generally in plumbing installations, machinery, engines etc.