Electrochemical Preparation and Corrosion Resistance of PEDOT Coatings on Surface of 2024 Aluminum Alloy
文献类型：期刊论文
| 作者 | Gao Bowen1,2; Wang Meihan2; Yan Maocheng1; Zhao Hongtao1; Wei Yinghua1; Lei Hao1 |
| 刊名 | ACTA METALLURGICA SINICA
 |
| 出版日期 | 2020-11-11 |
| 卷号 | 56期号:11页码:1541-1550 |
| 关键词 | PEDOT coating 2024 aluminum alloy electrodeposition EIS SVET |
| ISSN号 | 0412-1961 |
| DOI | 10.11900/0412.1961.2020.00089 |
| 通讯作者 | Wang Meihan(wangmhdicp@aliyun.com) ; Yan Maocheng(yanmc@imr.ac.cn) |
| 英文摘要 | Poly (3,4-ethylenedioxythiophene) (PEDOT) is one of the most promising anticorrosive materials due to its outstanding conductivity, stability, and environmental compatibility. From the standpoint of corrosion protection of aluminum alloys, PEDOT coatings are a good substitute for the traditional toxic chromium-based coatings. Electrochemical deposition, as a convenient and clean synthesis approach, has been widely employed for direct preparation of PEDOT coatings. Herein, cyclic voltammetry and constant-current method were used to electrodeposit PEDOT coatings on 2024 aluminum alloy substrates. The effects of polymerizing 3,4-ethylenedioxythiophene (EDOT) in three electrolyte solutions (lithium perchlorate (LiClO4) and sodium dodecyl sulfate (SDS), sodium hydrogen phthalate (C8H5NaO4) and SDS, and tetrabutylammonium hexafluorophosphate (TBAPF(6)) acetonitrile) on the growth and morphology of the PEDOT coatings were investigated. The interactions between the coating and the aluminum substrate were studied through galvanic corrosion, electrochemical impedance spectra (EIS), and scanning vibration electrode technology (SVET). The results show that TBAPF, exhibited passivation and corrosion-inhibition effects on the substrate and significantly reduced the oxidation potential of EDOT. The surface morphology of the coating prepared via constant-current method showed complete and dense agglomerated spherical particles. The PEDOT coating formed a passivation layer on the substrate, and thus protected it from the corrosive medium. The maximum resistance was achieved in DHS solution (3.5 g/L (NH4)(2)SO2+0.5 g/L NaCl) after 3 d. The scratched PEDOT coating could promote surface charge delocalization and avoid charge concentration, resulting in electrochemical protection of the aluminum alloy. |
| 资助项目 | National Natural Science Foundation of China[52071320] ; National Basic Research Program of China[2014CB643304] ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Program for Innovation Talents in Univerisity of Liaoning Province |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000584345200010 |
| 出版者 | SCIENCE PRESS |
| 资助机构 | National Natural Science Foundation of China ; National Basic Research Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Program for Innovation Talents in Univerisity of Liaoning Province |
| 源URL | [http://ir.imr.ac.cn/handle/321006/141457]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Wang Meihan; Yan Maocheng |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Shenyang Univ, Sch Mech Engn, Shenyang 110044, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao Bowen,Wang Meihan,Yan Maocheng,et al. Electrochemical Preparation and Corrosion Resistance of PEDOT Coatings on Surface of 2024 Aluminum Alloy[J]. ACTA METALLURGICA SINICA,2020,56(11):1541-1550. |
| APA | Gao Bowen,Wang Meihan,Yan Maocheng,Zhao Hongtao,Wei Yinghua,&Lei Hao.(2020).Electrochemical Preparation and Corrosion Resistance of PEDOT Coatings on Surface of 2024 Aluminum Alloy.ACTA METALLURGICA SINICA,56(11),1541-1550. |
| MLA | Gao Bowen,et al."Electrochemical Preparation and Corrosion Resistance of PEDOT Coatings on Surface of 2024 Aluminum Alloy".ACTA METALLURGICA SINICA 56.11(2020):1541-1550. |
入库方式： OAI收割
来源：金属研究所
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