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Iron Dissolution in a Sulfate Electrolyte with Benzoimidazole or a Borate Buffer |
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12.09.2008 г. |
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Iron Dissolution in a Sulfate Electrolyte with Benzoimidazole or a Borate Buffer V. V. Ekilik, V. V. Chernyavina, and G. N. Ekilik Rostov State University, ul. Zorge 7, Rostov-on-Don, 344090 Russia e-mail:
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Received April 19, 2005 Abstract — The effects of benzoimidazole and a borate buffer on the anodic dissolution of iron in a sodium sulfate electrolyte were compared under different conditions of voltammetric experiment (forward and reverse scans and cyclic voltammograms). The rotational speed, the electrode arrangement in a cell, pH, the concentrations of additives, and the temperature were also varied. In the presence of benzoimidazole, the active-passive transition peak at more negative potentials disappeared from the anodic voltammograms under certain experimental conditions, in contrast to electrolytes with a borate buffer. Anodic passivation in the presence of benzoimidazole was impeded compared to a borate buffer. PACS numbers: 82.45.Qr DOI: 10.1134/S0033173206040035
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