Understanding Cathodic Protection Systems

Cathodic protection is a widely employed technique for averting and managing corrosion in metals, particularly those prone to rust and corrosion. Metallic objects exposed to extended periods of water, like metal-hulled boats or water pipes, often feature cathodic protection systems to safeguard against corrosion over time.

How Cathodic Protection Functions

Cathodic protection relies on a readily corroding metal, such as zinc or iron, connected to the target surface that requires protection. This metal, known as a "sacrificial anode" or simply an "anode," undergoes rusting and corrosion in place of the primary metal.

Cathodic Protection Systems in the Industrial Sector

Cathodic protection primarily entails the galvanization of metals. For instance, steel is coated with a more easily corroded metal like zinc. As corrosion occurs, the sacrificial zinc undergoes rust and corrosion, preserving the underlying steel. An inherent electrical current forms between the two layers, effectively attracting oxidation and corrosion toward the sacrificial zinc.

In cases where a continuous electrical current cannot be established between the metals, an alternative cathodic protection method incorporates an external direct current (DC) to divert corrosion away from the protected surface.

Additional Benefits and Applications of Cathodic Protection

In numerous instances, the application of cathodic protection strengthens the protected object. Adding an extra layer of metal, even if it's less durable, enhances tensile strength and minimizes stress fractures, cracks, and ruptures.

HJ3 employs composite technologies that not only shield your metal surfaces from oxidation, corrosion, and rust but also enhance their durability. By implementing our solutions, you can avert the costly replacement of metal pipes due to corrosion. Contact HJ3 today to explore the benefits of cathodic protection for your assets.