INHIBITION MECHANISM OF STEARAMIDE DERIVATIVE ON THE CORROSION OF CO2

Acta Metall Sin

2006, Vol. 42

Issue (5): 533-536 DOI:

Research Articles

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INHIBITION MECHANISM OF STEARAMIDE DERIVATIVE ON THE CORROSION OF CO2

DU Haiyan

江西理工大学

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DU Haiyan. INHIBITION MECHANISM OF STEARAMIDE DERIVATIVE ON THE CORROSION OF CO2. Acta Metall Sin, 2006, 42(5): 533-536 .

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Abstract Electrochemical studies were performed in aerated brine solution by electrochemical polarization measures and electrochemical impedance spectroscopy(EIS) measures. Experimental results revealed that stearamide derivative inhibitor acted as a good inhibitor for mild steel in aerated brine solution. The recorded electrochemical data showed that the corrosion resistance was greatly enhanced in the presence of stearamide derivative inhibitor. Polarization curves revealed that the inhibitor tested was an anodic type inhibitor and the inhibition efficiency increased with increasing concentrations to reach maximum at 0.5gL-1. Equivalent circuit of the investigated system was suggested.

Key words: carbon dioxide corrosion corrosion inhibitor EIS electrochemical polarization

Received: 26 August 2005

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y2006/V42/I5/533

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