Study of Corrosion Rate and Mechanism of Carbon Steel Alloy in Simulated Sour Electrolyte System by Electrochemical Noise

In this study, corrosion rate and mechanism of 1015 carbon steel alloy in the simulated sour electrolyte system was investigated for 21 days by the electrochemical noise and weight loss methods. Changes of the corrosion rate were measured during test period and compared with the results of weight loss. The statistical Distribution type obtained fr om electrochemical current noise data was used to determine corrosion mechanisms. The obtained results were confirmed by surface observations and weight loss results. Distribution of current data showed that localized corrosion must be happened on carbon steel surface during experimental period. It seems that electrochemical noise can be used for corrosion monitoring in sour electrolyte systems.