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The Electric Currents Flowing over Rusting Iron

Abstract

THE electrochemical mechanism of rusting is generally recognised, but our knowledge of the distribution and strength of the currents rests upon somewhat indirect methods. In the corrosion of a horizontal iron surface by filter-paper wetted with sodium bicarbonate solution, it has lately been found possible to study the current flowing horizontally through the paper without any interruption of the circuits. This is accomplished by shunting a small fraction through two non-polarising electrodes of superficially oxidised copper surrounded by filter-paper soaked in the same liquid and separated by waxed paper.

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References

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EVANS, U. The Electric Currents Flowing over Rusting Iron. Nature 136, 792–793 (1935). https://doi.org/10.1038/136792a0

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