| A passivation mechanism of doped polyaniline on 410 stainless steel in deaerated H2SO4 solution |
| L. Zhong; H. Zhu; J. Hu; S. H. Xiao; F. X. Gan
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| 2006
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| 发表期刊 | Electrochimica Acta
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| ISSN | 0013-4686
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| 卷号 | 51期号:25页码:5494-5501 |
| 摘要 | To investigate the role of polyaniline (PANI) in the corrosion protection of stainless steel (SS) in oxygen-deficient acidic solution, a separate doped PANI film electrode on a glass substrate was prepared and the test solution (1 M H2SO4) was purged with high-purity N-2 until dissolved oxygen level decreased more than two orders of magnitude. In this deaerated 1 M H2SO4 solution, the galvanic coupling interaction between the separate PANI film electrode and 410 SS was studied. Results reveal that the separate PANI film can passivate the 410 SS steadily for a long period of time. A variety of experimental methods including potentiodynamic measurement, potentiostatic (current-time) examination and X-ray photoelectron spectroscopy (XPS) are used to explore the mechanism by which the separate PANI film passivated the galvanic coupling SS in the deaerated sulfuric solution. These studies show that passivation is achieved because PANI film provides a large critical current at the early stage of coupling and a persistent passive current by its electrochemical dedoping/re-doping equilibrium activity with the acidic environment at the subsequent stage of coupling. (c) 2006 Elsevier Ltd. All riuhts reserved. |
| 部门归属 | wuhan univ, sch resources & environm sci, wuhan 430072, peoples r china. state key lab corros & protect met, shenyang 110015, peoples r china.;gan, fx (reprint author), wuhan univ, sch resources & environm sci, wuhan 430072, peoples r china;fxgan@public.wh.hb.cn
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| 关键词 | Doped Polyaniline
Stainless Steel
Galvanic Coupling
Passivation
Mechanism
Corrosion Protection
Mild-steel
Conducting Polymers
Stainless-steel
Coatings
Films
Anticorrosion
Performance
Inhibition
Behavior
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| URL | 查看原文
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| WOS记录号 | WOS:000240026500033
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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/321006/34763
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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. Zhong,H. Zhu,J. Hu,et al. A passivation mechanism of doped polyaniline on 410 stainless steel in deaerated H2SO4 solution[J]. Electrochimica Acta,2006,51(25):5494-5501.
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| APA |
L. Zhong,H. Zhu,J. Hu,S. H. Xiao,&F. X. Gan.(2006).A passivation mechanism of doped polyaniline on 410 stainless steel in deaerated H2SO4 solution.Electrochimica Acta,51(25),5494-5501.
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| MLA |
L. Zhong,et al."A passivation mechanism of doped polyaniline on 410 stainless steel in deaerated H2SO4 solution".Electrochimica Acta 51.25(2006):5494-5501.
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