Abstract
Scanning electrochemical microscopy (SECM) was used to monitor the corrosion processes occurring at Fe/Mg couple immersed in 0.1M NaCl aqueous solution. The release of Fe2+ ions, Mg2+ ions and the consumption of dissolved oxygen was successfully monitored as a function of time by setting the tip potential at +0.60V, −1.6V and −0.75V respectively. The results revealed that the Fe/Mg couple away from each other showed a decrease in current values with time. The decrease in current at Fe/Mg is due to the formation of oxide layer of Mg and the corrosion products over the Fe with times.
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