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Data publikacji: 2023-04-04

Corrosion inhibition of magnesium alloy AZ31 in chloride-containing solutions by aqueous permanganate

Maria A. Osipenko, Aliaksandr A. Kasach, Janusz Adamiec, Małgorzata Zimowska, Irina I. Kurilo, Dzmitry Kharytonau

Journal of Solid State Electrochemistry 27 (2023-04-04) 1847-1860

Abstrakt

In this work, corrosion of the AZ31 magnesium alloy was examined in 0.05 M NaCl solutions containing 0.01–0.150 mol/dm3 of potassium permanganate as a corrosion inhibitor. A set of electrochemical impedance spectroscopy, linear sweep voltammetry, and hydrogen evolution measurements revealed high inhibitor effectiveness at relatively high (0.150 mol/dm3) KMnO4 concentrations. Based on data of energy-dispersive X-ray analysis, scanning electron microscopy, and Raman spectroscopy, a mechanism of the corrosion inhibition of AZ31 alloy by potassium permanganate in chloride-containing media was proposed.

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