Corrosion behaviour of carbon steel in aqueous solution containing Galena concentrate

Abstract

Carbon steel specimen was left in an aqueous solution containing galena concentrate for 15 days. Electrochemical Impedance Spectroscopy (EIS) method was conducted at 1st, 3rd, 5th, 7th, 9th, 11th, 13th and 15th days of immersion. Carbon steel was immersed in the lower solid region of 25 wt% and 75 wt% galena concentrate in solution. After 15 days of immersion, polarization resistance was measured using linear polarization resistance (LPR) technique. Analysis of impedance data from EIS method enables the determination of polarization resistance. The result showed that polarization resistance increases as a function of the solid percentage of galena concentrate and corrosion of carbon steel could be minimized.