CATHODIC PROTECTION
Cathodic Protection is a corrosion prevention technique commonly used to protect metal structures and components from corrosion.
CATHODIC PROTECTION
Cathodic Protection is an important technique to prevent corrosion and extend the lifespan of metal structures and components. By employing galvanic or impressed current Cathodic Protection methods, Metal Finishing operations can ensure the durability and integrity of their products in corrosive environments.
CATHODIC PROTECTION TECHNIQUES
Galvanic Cathodic Protection: In galvanic cathodic protection, a more reactive metal (anode) is coupled with the metal structure to be protected (cathode). The anode corrodes sacrificially, providing Cathodic Protection to the structure. This is commonly used in applications such as protecting underground pipelines, storage tanks, and marine structures.
Impressed Current Cathodic Protection: In impressed current Cathodic Protection, an external power source is used to supply a continuous electric current to the metal structure, making it the cathode. This method is often employed in larger structures or where the environment requires higher levels of protection. It allows for greater control over the level of protection and can be adjusted as needed.
cathodic protection APPLICATIONS
Cathodic Protection can be applied to protect plated or coated metal surfaces from corrosion. For example, in electroplating processes, a metal substrate is coated with a thin layer of another metal through electrolysis. By ensuring that the substrate acts as the cathode during Plating, Cathodic Protection can help prevent the plated layer from corroding.
Principle of Cathodic Protection
Cathodic Protection relies on the principle of electrochemical corrosion, where metal corrosion occurs due to the flow of electrons from the anode (the corroding metal) to the cathode (a less reactive metal or an electron acceptor). By making the metal structure the cathode in the electrochemical cell, the flow of electrons is reversed, and corrosion is prevented.
optimum cathodic protection
Optimum Anode Technologies provides high quality cost-effective dimensionally stable anodes for Cathodic Protection applications. We supply mixed metal oxide and platinum catalytic coatings that are sintered to a titanium substrate, providing an anode that is both lightweight and durable.
Our proprietary catalysts are suitable for use in a wide range of cathodic protection applications, including soil, carbonaceous landfill, fresh water, brackish water and sea water. Our high-value metal substrates assure high corrosion resistance.
Compatibility ISSUES AND Considerations
Compatibility issues can arise due to differences in electrical conductivity, corrosion potential, and material properties between the substrate and the protective system. Selecting appropriate materials and design parameters is essential to ensure effective and long-lasting corrosion protection without adverse effects on the substrate or coating.
technical resources
You’ll find product information, reactive metals information, corrosion charts, calculators and much more in the TITAN Technical Resource Center.
