| 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 A_3 model(without magnetic field)to A_3+A_4 model(with magnetic field).The intermediate product Al_((ad))~+ is the paramagnetic ion that would be influenced by magnetic field sensitively. |
