The influence of rare earth Ce3+ ions on the corrosion behaviour of Fe-Mn-C TWIP steel in 1M hydrochloric acid solution was studied by electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SEM). Electrochemical corrosion tests showed that Ce3+ can significantly reduce corrosion deterioration up to 1.0mM. Beyond that level the corrosion rate increases till a steady value. Surface film resistance increases with time evolution until 24 h, then decreases and stabilises. High corrosion protection of steel surface after 24 h exposure to the acidic solution containing the optimal Ce3+ ion concentration is revealed by SEM investigations.

Enhanced corrosion resistance of austenitic Fe-Mn-C TWIP steel by cerium(III) in 1M hydrochloric acid pickling solution / Rosalbino, F.; Scavino, G.. - In: MATERIALS AND CORROSION. - ISSN 1521-4176. - ELETTRONICO. - 68:11(2017), pp. 1212-1219. [10.1002/maco.201709507]

Enhanced corrosion resistance of austenitic Fe-Mn-C TWIP steel by cerium(III) in 1M hydrochloric acid pickling solution

F. Rosalbino;G. Scavino
2017

Abstract

The influence of rare earth Ce3+ ions on the corrosion behaviour of Fe-Mn-C TWIP steel in 1M hydrochloric acid solution was studied by electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SEM). Electrochemical corrosion tests showed that Ce3+ can significantly reduce corrosion deterioration up to 1.0mM. Beyond that level the corrosion rate increases till a steady value. Surface film resistance increases with time evolution until 24 h, then decreases and stabilises. High corrosion protection of steel surface after 24 h exposure to the acidic solution containing the optimal Ce3+ ion concentration is revealed by SEM investigations.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2689942
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