Anodic protection is a technique used to prevent corrosion in metals, particularly in environments where they are exposed to aggressive substances. This method involves applying a small electrical current to the metal, making it the anode in an electrochemical cell. By doing so, the metal becomes less susceptible to corrosion, as the protective oxide layer on its surface is enhanced. This technique is commonly used in industries such as oil and gas, chemical processing, and marine applications. Anodic protection is particularly effective for metals like stainless steel and aluminum, which can form stable oxide layers that protect against further degradation.