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Electrodissolution of iron in sodium sulfate and sodium bicarbonate solutions at pH8

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Abstract

The effect of sulfate ions on the electrochemical behaviour of iron electrodes in the presence of bicarbonate ions has been investigated. In solutions containing sulfate ions only, iron electrodes experience uniform corrosion and sulfate ions are aggressive. In the presence of bicarbonate ions, the sulfate ions become less aggressive and a pitting–repassivation process is observed. The differences in electrochemical behaviour have been compared and explained by examining the formation of probable products and their physicochemical properties during electrochemical polarization.

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Authors and Affiliations

  1. Chemistry Department, Sherbrooke University, Sherbrooke Quebec, Canada

    G. Vatankhah, M. Drogowska & H. Menard

  2. Institut de recherche d'Hydro-Quebec, 1800 Boul. Lionel-Boulet, Varennes Quebec, Canada

    L. Brossard

Authors
  1. G. Vatankhah
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  2. M. Drogowska
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  3. H. Menard
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  4. L. Brossard
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Vatankhah, G., Drogowska, M., Menard, H. et al. Electrodissolution of iron in sodium sulfate and sodium bicarbonate solutions at pH8. Journal of Applied Electrochemistry 28, 173–183 (1998). https://doi.org/10.1023/A:1003230725414

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