The combination of cathodic protection and coating can effectively prevent the corrosion of steel and other metal structures in seawater, salt water and fresh water.Depending on the mode of providing protection current, cathodic protection can be divided into sacrificial anode and impressed current methods.The sacrificial anode generates the cathodic protection current through the dissolution of the electronegative anode material itself.And impressed current cathodic protection method is through external dc power supply to provide the required protection current, its characteristic is high driving voltage, large output current, protection of life is long, and along with the change of working conditions of the outside world and automatically adjust the size of the output current, make the protected metal structure has been in the best state of protection.Impressed current cathodic protection systems are usually used for large naval ships or large Marine ships.
The cathode assembly anode produced by Aluminum are widely used in the electrolytic industry
