In this study, the corrosion behavior of the AA2198-T851 and its friction stir
weldment was used to show the qualitative use of potentiodynamic polarization and
the effect of anodic hydrogen evolution (AHE). The results showed that some details
can be revealed in the anodic arm of the polarization curves of an Al alloy above the
breakdown potential with changes in cell configuration and electrolytes. In addition,
AHEinterferes with the measured current density in the anodic arm, which in turn can
be used to assess the extent of corrosion susceptibility and changes in anodic
dissolution behavior of the alloy.
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