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首页> 外文期刊>Corrosion: The Journal of Science and Engineering >Mechanism of Cathodic Reactions in Acetic Acid Corrosion of Iron and Mild Steel
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Mechanism of Cathodic Reactions in Acetic Acid Corrosion of Iron and Mild Steel

机译：Mechanism of Cathodic Reactions in Acetic Acid Corrosion of Iron and Mild Steel

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摘要

The mechanism of the cathodic reaction in acetic acid corrosion of iron and API X65 mild steel was investigated in mildly acidic sodium chloride electrolytes. The behavior of the charge transfer controlled currents in the steady state voltammograms showed that undissociated acetic acid is not significantly electroactive. This behavior was found to be in accordance with the so-called "buffering effect" mechanism, where acetic acid acts solely as an additional source of hydrogen ions. The increased limiting currents in the presence of acetic acid showed a linear correlation with undissociated acetic acid concentration in agreement with the Levich equation, suggesting that the limiting currents are under mass transfer control. Both pure iron and X65 steel exhibited a similar behavior regarding the cathodic currents, indicating that the mechanism of hydrogen ion reduction is not influenced by minor impurities present in the X65 steel.

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