Impedance spectroscopic study of corrosion inhibition of copper by surfactants in the acidic solutions
文献类型：期刊论文
| 作者 | H. Y. Ma ; S. H. Chen ; B. S. Yin ; S. Y. Zhao ; X. Q. Liu |
| 刊名 | Corrosion Science
 |
| 出版日期 | 2003 |
| 卷号 | 45期号:5页码:867-882 |
| 关键词 | cetyltrimethylammonium bromide (CTAB) inhibition efficiency (IE) hemimicelle potential of zero charge (pzc) electrochemical impedance spectroscopy (EIS) m sulfuric-acid 0.5m nacl electrode iron dissolution mechanism chloride sulfate alloys media |
| ISSN号 | 0010-938X |
| 中文摘要 | The inhibitive action of the four surfactants, cetyltrimethylammonium bromide (CTAB), sodium dodecyl sulfate, sodium oleate and polyoxyethylene sorbitan monooleate (TWEEN-80), on the corrosion behavior of copper was investigated in aerated 0.5 mol dm(-3) H2SO4 solutions, by means of electrochemical impedance spectroscopy. These surfactants acted as the mixed-type inhibitors and lowered the corrosion reactions by blocking the copper surface through electrostatic adsorption or chemisorption. The inhibitor effectiveness increased with the exposure time to aggressive solutions, reached a maximum and then decreased, which implies the orientation change of adsorbed surfactant molecules on the surface. CTAB inhibited most effectively the copper corrosion among the four surfactants. The copper surface was determined to be positively charged in sulfuric acid solutions at the corrosion potential, which is unfavourable for electrostatic adsorption of cationic surfactant, CTAB. The reason why CTAB gave the highest inhibition efficiency was attributed to the synergistic effect between bromide anions and positive quaternary ammonium ions. C16H33N(CH3)(4)(+) ions may electrostatically adsorbed on the copper surface covered with primarily adsorbed bromide ions. On the basis of the variation of impedance behaviors of copper in the surfactant-containing solutions with the immersion time, the adsorption model of the surfactants on the copper surface was proposed. (C) 2002 Elsevier Science Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/35962]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | H. Y. Ma,S. H. Chen,B. S. Yin,et al. Impedance spectroscopic study of corrosion inhibition of copper by surfactants in the acidic solutions[J]. Corrosion Science,2003,45(5):867-882. |
| APA | H. Y. Ma,S. H. Chen,B. S. Yin,S. Y. Zhao,&X. Q. Liu.(2003).Impedance spectroscopic study of corrosion inhibition of copper by surfactants in the acidic solutions.Corrosion Science,45(5),867-882. |
| MLA | H. Y. Ma,et al."Impedance spectroscopic study of corrosion inhibition of copper by surfactants in the acidic solutions".Corrosion Science 45.5(2003):867-882. |
入库方式： OAI收割
来源：金属研究所
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