Abstract:Tribocorrosion behavior and migration of heavy metal of AISI 304 stainless steel in volume fraction 3% of acetic acid under different potentials was studied.The five potentials from both cathodic and anodic domains were determined by the potentiodynamic anodic polarization curves recorded from stainless steel in testing solution.The friction coefficient and wear of stainless steel under each potential applied were determined,and corresponding wear of stainless steel was calculated.Tribocorrosion mechanism of stainless steel was discussed,and migration of heavy metal elements of AISI 304 stainless steel during triboccrrosion process was investigated.The results show that when the potential is at cathodic region,the mechanical wear is mainly observed for steel.Both friction coefficient and wear become less with the abrasion of surface oxide film.However,when the potential is increasing to anodic region,friction coefficient,total volume loss and current for stainless steel are increased with the help of synergist effort of corrosion and wear.Total wear loss is three times larger than that at OCP (-0.4 V) when the potential applied is 1.05 V.The wear is a mixed effect of tribocorrosion and abrasive wear,and the migration amount of Cr and Ni elements is 114 μg/L and 58 μg/L,respectively.