Direct Evidence for the Cathodic Depolarization Theory of Bacterial Corrosion

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Science  25 Feb 1966:
Vol. 151, Issue 3713, pp. 986-988
DOI: 10.1126/science.151.3713.986


Cathodic depolarization of mild steel by Desulfovibrio desulfuricans was demonstrated with benzyl viologen used as an electron acceptor. Direct measurement of the cathodic depolarization current indicated a maximum current density of 1 microampere per square centimeter. Aluminum alloys were also cathodically depolarized by the organism.