Analytic studies of marine atmospheric corrosion based on multiphysics simulation

Abstract

Because the environment at sea is more severe than inland, the corrosion of hull and ship equipment is extremely serious. It can be said that corrosion is one of the biggest factors affecting the life of ships. The cost of anti-corrosion for ships every year is one third or more of the total maintenance cost. The Marine atmosphere corrosion simulation of Q235 carbon steel is realized by Multiphysics simulation software. Due to the high probability and hazard of electrochemical corrosion in oceanic and atmospheric environment, this paper mainly analyzes electrochemical corrosion behavior and its influencing factors, providing a theoretical basis for monitoring and reducing corrosion hazards. The results show that the corrosion rate of Q235 steel in the oceanic atmosphere is 400 to 600 μm/a, and the corrosion rate is affected by temperature, humidity, limiting current density and other factors.