| ZHANG Shi-hong,QI Zhen-wei,WANG Meng-di,CHEN Yan-fen.Corrosion Inhibition of C38 by Pomelo Peel Extract[J],43(1):51-54 |
| Corrosion Inhibition of C38 by Pomelo Peel Extract |
| Received:November 04, 2013 Revised:January 16, 2014 |
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| DOI： |
| KeyWord:pomelo peel extract natural green inhibitor KI electrochemical test |
| Author | Institution |
| ZHANG Shi-hong |
College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu , China |
| QI Zhen-wei |
College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu , China |
| WANG Meng-di |
College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu , China |
| CHEN Yan-fen |
Huai'an Tap Water Co. , Ltd, Huai'an , China |
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| Abstract: |
| Objective To investigate the performance of pomelo peel extract in corrosion inhibition in 1 mol / L HCl. Methods A natural green corrosion inhibitor was extracted from pomelo peel using soxhlet extraction method, and the mechanism of corrosion inhibition of the extract was analyzed in a complex with 0. 01 mol / L KI. Weight-loss and Electrochemical tests were used. Results The result of weight-loss test showed that the corrosion inhibition of the extract to C38 steel was up to 93% , and it reached up to over 98% when used in a complex with 0. 01 mol / L KI. It was also shown that the adsorption of the inhibitor molecules on the surface of C38 steel obeyed Langrnuir isotherm. The Tafel polarization curves indicated that both anodic and cathodic corrosion processes were suppressed by the inhibitor. The EIS indicated that the charge transfer resistance increased with the increase of the inhibitor concentration. Conclusion Pomelo peel extract is a good corrosion inhibitor and the effect enhanced by the addition of halogen ions. |
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