Analytical calculation of the potential for contact corrosion of metals in the marine environment

Abstract

One of the most common types of ship corrosion is contact corrosion, which occurs at the interface of dissimilar metals being washed. It poses a serious danger to the ship's hull and ship metal structures, as it leads to a sharp increase in the rate of corrosion damage to one of the contacting metals. Therefore, the fight against contact corrosion is one of the most urgent tasks in the field of anti-corrosion protection of ships. Protection of ships from contact corrosion requires solving a set of interrelated engineering problems that require a quantitative assessment of the rate of corrosion processes on ship structures and the effectiveness of anti-corrosion protection means used on ships [1, 2]. The article discusses an analytical approach in assessing the local rate of electrochemical corrosion processes of ship hull structures based on the phenomenon of polarization using polarization curves and approximation methods.