Abstract
The influences of applied magnetic field on the corrosion behavior of Al–3.0 wt%Mg alloy in 3.5 wt% NaCl solution were investigated by electrochemical measurements, scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS). Stochastic analysis was applied to investigate the influences of applied magnetic field. The results indicate that the application of horizontal magnetic field of 0.4 T would increase the pitting corrosion potential (E pit), decrease the corrosion current density (i corr), prolong the pit initiation time, slow down the pit generation rate and inhibit the growth of pitting of the tested alloys in 3.5 wt% NaCl solution. The applied magnetic field would also change the mechanism of pit initiation of Al–3.0 wt%Mg alloy from A3 model (without magnetic field) to A3 + A4 model (with magnetic field). The intermediate product Al +(ad) is the paramagnetic ion that would be influenced by magnetic field sensitively.
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This study was financially supported by the National Natural Science Foundation of China (No. 51379070) and the Fundamental Research Funds for the Central Universities (No. 2014B31714).
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Zhang, X., Wang, ZH., Zhou, ZH. et al. Corrosion behavior of Al–3.0 wt%Mg alloy in NaCl solution under magnetic field. Rare Met. 36, 627–634 (2017). https://doi.org/10.1007/s12598-016-0785-5
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DOI: https://doi.org/10.1007/s12598-016-0785-5