Aluminium alloy sacrificial anodes are often used to protect marine structures due to their high electrochemical properties. Anodes are often immersed in seawater when the tank is ballasted and dry with the tank empty. We study the properties of an Al-Zn-In-Cd alloy anode with cyclic immersion in seawater in the laboratory.
Analysis of the Sunde’s equation for multiple electrodes in horizontal configurationsis done in order to show that this equation cannot be used in the case of typical cathodic protection design. An accurate approach to horizontal anode groundbed design and understanding of the theory behind groundbed resistance equations.