Corrosion Behavior of 5083 Al-alloy under Magnetic Field
The corrosion behavior of 5083 Al-alloy under magnetic field was studied by immersion test,electrochemical measurement,scanning electron microscope(SEM),energy spectrum analyzer(EDS)and electrochemical workstation,et al.The results indicated that the magnetic field could affect the motion of charged particles in the corrosive medium and inhibited the effect of destroying effect of Cl-on passivation film.The applied magnetic field could rise the free corrosion-and pitting corrosion-potentials,and reduce the corrosion current density of 5083 Al-alloy.At the same time,the number and size of pits under magnetic field were lower than those without applied magnetic field.Magnetic field can reduce the pitting sensitivity and corrosion rate of 5083 Al-alloy.The inhibition effect is enhanced with the increase of magnetic field intensity.
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