This study evaluated the technical feasibility of applying a combination of calcareous deposit coating and cathodic protection (anodes) in lieu of completely coating ship ballast tanks with high-performance coatings (epoxy). As an initial step to achieve this goal, batches of calcareous deposits were formed on A36 grade carbon steel plates, induced by
cathodic polarization (CP) in natural seawater. The effect of deposition parameters such as CP current density, potential, and coating time on the coating’s characteristics were evaluated to establish the optimum coating condition. Results showed that good overall calcareous coating can be achieved by lowering the current density as much as possible in the range...
Keywords: calcareous deposits, cathodic protection, marine corrosion, ship ballast tank, FEM analysis