Distribution of potential within a corrodent was analyzed using several geometric arrangements of electrodes which lay in a common surface. Polarization was assumed to follow Wagner's useful relation as it varied from point to point on the electrode in response to the local corrosion current. The distribution of the corrosion attack over the anode also was studied.

It was found that there was a size effect in the galvanic corrosion studied with the detailed behavior depending to a great extent on whether the electrodes were larger or smaller than Wagner's polarization parameter. It was found also that the potential of a galvanic couple depended on the relative areas of the two electrodes, as well as on their open cell potentials. 3.8.2

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Copyright 1957 by the National Association of Corrosion Engineers.
1957
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