| Investigation into designed current oscillations during anodic dissolution of Al in NaCl+NaNO2 solutions |
| L. Li; C. Wang; S. Chen
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| 2007
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| 发表期刊 | Electrochimica Acta
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| ISSN | 0013-4686
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| 卷号 | 53期号:4页码:1655-1662 |
| 摘要 | We previously proposed that current oscillations occurred when there were both an active factor and a passive factor that depended on each other and influenced the anodic dissolution processes of metallic materials alternatively. In this study, an electrochemical system, Al vertical bar NaCl + NaNO2, was designed to verify this proposal. The chloride ions are aggressive ions (active factor), assisting the dissolution of the oxide film, while nitrite ions are inhibitive ones (passive factor), assisting the formation of the oxide film. The dissolution and the formation of the oxide film on the surface of the Al electrode occurred alternatively, and the current oscillations were observed to occur in this system, which proved the above point. The Al NaCl + NaNO2 system is a new electrochemical oscillator, in which hydrogen evolves periodically from the surface of the electrode during the current oscillations. The results were discussed in terms of the formation and the dissolution of the oxide film. The current oscillations were induced by pitting corrosion of Al in chloride ions containing solutions. It is expected that more oscillatory systems can be found and further studies into the nonlinear dynamic behaviour of metallic materials can be conducted in the light of the proposal. (c) 2007 Elsevier Ltd. All rights reserved. |
| 部门归属 | [li, liang; wang, chao] xuzhou normal univ, dept chem, xuzhou 221116, peoples r china. [chen, shenhao] shandong univ, dept chem, jinan 250100, peoples r china. [wang, chao; chen, shenhao] state key lab corros & protect, shenyang 110016, peoples r china.;li, l (reprint author), xuzhou normal univ, dept chem, xuzhou 221116, peoples r china;lil@xznu.edu.cn
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| 关键词 | Al
Electrodissolution
Current Oscillations
Pitting
nacl+nano2
Point-defect Model
Electrochemical-behavior
Pitting Corrosion
Oxide-films
Aluminum
Iron
Electrodissolution
Electrolyte
Oxidation
Kinetics
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| URL | 查看原文
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| WOS记录号 | WOS:000251759900036
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/33641
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| 专题 | 中国科学院金属研究所
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推荐引用方式
GB/T 7714 |
L. Li,C. Wang,S. Chen. Investigation into designed current oscillations during anodic dissolution of Al in NaCl+NaNO2 solutions[J]. Electrochimica Acta,2007,53(4):1655-1662.
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| APA |
L. Li,C. Wang,&S. Chen.(2007).Investigation into designed current oscillations during anodic dissolution of Al in NaCl+NaNO2 solutions.Electrochimica Acta,53(4),1655-1662.
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| MLA |
L. Li,et al."Investigation into designed current oscillations during anodic dissolution of Al in NaCl+NaNO2 solutions".Electrochimica Acta 53.4(2007):1655-1662.
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