What is a common function of cathodic protection systems?

The common function of cathodic protection systems is to prevent metal corrosion. This is achieved through the application of a direct current to the metal structure, which counteracts the electrochemical processes that lead to corrosion. In environments where metals are exposed to soil or water, cathodic protection provides a vital defense by ensuring that the metal surface remains in a reduced state, thus significantly slowing or completely stopping the anodic reactions that cause deterioration.

Corrosion typically occurs when metals lose electrons and react with their environment, leading to damage. By using methods such as sacrificial anodes or impressed current systems, cathodic protection systems effectively reverse this process, protecting the integrity and lifespan of pipelines, tanks, and other metal structures.

While enhancing electrical conductivity, improving structural integrity, and increasing thermal conductivity are essential functions in specific contexts, they do not align with the primary goal of a cathodic protection system, which is specifically focused on mitigating corrosion.