The Application of Grey System Theory on the Corrosion Behavior of Steel in Seawater

摘要

The information of seawater corrosion system is incomplete, unclear, and corrosion data's distances are unequal. The influence degree of each marine environmental factor on carbon steel corrosion rate is analyzed based on Grey System theory, the GM (1, 1) corrosion model is established which reflects corrosion thickness range with time. The result shows that the main environmental factors which affect the corrosion rate of carbon steels in seawater are the temperature of seawater, sea organism attachment level and salinity of seawater. This study can provide a reference of steel structures' corrosion prediction exposed to marine environment.