| 5083铝合金搅拌摩擦焊接头微弧氧化膜电化学腐蚀行为 |
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| 引用本文： | 鲁 亮,薛文斌,金小越,杜建成,华 铭.5083铝合金搅拌摩擦焊接头微弧氧化膜电化学腐蚀行为[J].稀有金属材料与工程,2012,41(9):1597-1601. |
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| 作者姓名： | 鲁 亮 薛文斌 金小越 杜建成 华 铭 |
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| 作者单位： | 北京师范大学射线束技术与材料改性教育部重点实验室,北京100875;北京市辐射中心,北京100875 |
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| 基金项目： | 国家自然科学基金项目(51071031);北京市自然科学基金项目(2102018) |
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| 摘 要： | 利用微弧氧化技术在5083铝合金搅拌摩擦焊(FSW)接头表面制备一层均匀的微弧氧化膜.通过动电位极化和电化学阻抗谱(EIS)分析,评估微弧氧化前后搅拌摩擦焊接头的腐蚀特性.结果表明,经过微弧氧化表面处理的搅拌摩擦焊样品腐蚀电流密度减小,电化学阻抗增加,抗腐蚀性能得到了显著改善.未氧化处理的不同焊接组织区域腐蚀行为存在明显的差异,而5083铝合金母相和焊缝表面的微弧氧化膜具有相同的形貌和抗腐蚀性能.
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| 关 键 词： | 微弧氧化 搅拌摩擦焊 5083铝合金 电化学阻抗谱 |
| 收稿时间： | 2011/9/15 0:00:00 |
Electrochemical Corrosion Behavior of Microarc Oxidation Coatings on Friction stir weld Joints of 5083 Aluminum Alloy |
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| Lu Liang,Xue Wenbin,Jin Xiaoyue,Du Jiancheng and Hua Ming.Electrochemical Corrosion Behavior of Microarc Oxidation Coatings on Friction stir weld Joints of 5083 Aluminum Alloy[J].Rare Metal Materials and Engineering,2012,41(9):1597-1601. |
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| Authors: | Lu Liang Xue Wenbin Jin Xiaoyue Du Jiancheng and Hua Ming |
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| Affiliation: | 1,2(1. Key Laboratory of Beam Technology and Materials Modification of Ministry of Education,Beijing Normal University, Beijing 100875, China)(2. Beijing Radiation Center, Beijing 100875, China) |
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| Abstract: | Uniform microarc oxidation coatings on the friction stir weld (FSW) joint of 5083 aluminum alloy were prepared by microarc oxidation (MAO) technique. The corrosion resistance of the friction stir weld joint before and after microarc oxidation surface treatment was evaluated by potentiodynamic polarization test and electrochemical impedance spectroscopic analysis (EIS). The results show that by microarc oxidation surface treatment, the corrosion current density of friction stir weld samples is decreased, and its electrochemical impedance is increased, thus the corrosion resistance of coated samples being significantly improved. In addition, the corrosion behavior at Fsw microstructure zones without MAO surface treatment have rather obvious difference, but after MAO treatment, both the coated base metal and Fsw joint on 5083 aluminum alloy have similar surface morphology and corrosion resistance. |
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| Keywords: | microarc oxidation friction stir weld 5083 aluminum alloy electrochemical impedance spectroscopy |
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