Evaluation of 316L Stainless Steel Corrosion Resistance in Solution Simulating the Acid Hydrolysis of Biomass

E. A. Ferreira, R. D. Noce, C. S. Fugivara, A. V. Benedetti
2011 Journal of the Electrochemical Society  
The corrosion resistance of 316L stainless steel in 65 wt % ethanol, 35 wt % water, 1 wt % H 2 SO 4 solution containing different NaCl concentrations and at different temperatures was investigated using open circuit potential measurements, polarization curves, and electrochemical impedance spectroscopy. At 25 C, the minimum NaCl concentration required for occurrence of pitting was 0.58 wt %. In 0.35 wt % NaCl solution, localized corrosion was observed at temperatures higher than 40 C and,
more » ... ing on the potential, metastable or stable pits were observed. No pits were observed below 40 C in 0.35 wt % NaCl solution.
doi:10.1149/1.3554728 fatcat:hns7vb4zpnfdjd2ahi4sqzmrtq