Analysis and Simulation of the Factors Affecting the Impressed Current Cathodic Protection Potential of the Ship

Abstract

At present, the ship will use the impressed current cathodic protection (ICCP) methods for hull corrosion protection. Protection potential is the core parameter of the ICCP method, so how to set the protection potential value will determine the anticorrosive effect of ship. Firstly, establish ship ICCP potential calculation model, and then discuss the impact of ICCP on potential and current density distribution of the factors in four aspects: distance between the anode and the body to be protected; corrosion resistivity variation influence on current distribution; anode arrangement and size influence on current distribution; coating influence on the potential and current distribution. Through simulation, it is confirmed that these factors affect the ICCP potential to provide a theoretical basis for the rational design of ICCP parameters.