Cathodic inhibitors are substances used to reduce the rate of corrosion on metal surfaces, particularly in environments where moisture and electrolytes are present. They work by altering the electrochemical reactions that occur at the cathode, which is the part of the metal that receives electrons during corrosion. By doing so, these inhibitors help protect metals like steel and aluminum from deterioration. These inhibitors can be applied in various forms, such as coatings or additives in water systems. Common examples include zinc and chromate compounds, which can effectively slow down corrosion processes. By using cathodic inhibitors, industries can extend the lifespan of metal structures and reduce maintenance costs.