| 铝合金7A04在干湿周浸条件下的腐蚀行为研究(英文) |
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| 引用本文： | 周和荣,李晓刚,肖葵,董超芳.铝合金7A04在干湿周浸条件下的腐蚀行为研究(英文)[J].稀有金属材料与工程,2009,38(Z1). |
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| 作者姓名： | 周和荣 李晓刚 肖葵 董超芳 |
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| 作者单位： | 1. 北京科技大学,北京,100083
2. 北京科技大学,北京,100083;北京市腐蚀、磨蚀与表面技术重点实验室,北京,100083 |
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| 基金项目： | 国家自然科学基金，the National Science and Technology Basic Conditional Platform |
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| 摘 要： | 采用扫描电镜、X光电子能谱、失重法和电化学交流阻抗技术研究了铝合金7A04在0.6 mol/L NaCl溶液和0.6 mol/LNaCl+0.02mol/L NaHSO3溶液中干湿周浸后的腐蚀行为和规律,并测试了3种材料力学性能的变化.研究结果表明,随试验时间的延长,铝合金腐蚀产物不断增多,腐蚀失重符合指数规律C=A tn,抗拉强度和延伸率呈下降趋势;表面腐蚀产物形貌呈块状,在0.6 mol/L NaCl溶液中腐蚀产物主要为氢氧化铝和氯化铝,而在0.6 mol/LNaCl+0.02 mol/LNaHSO3溶液中腐蚀产物主要为氢氧化铝、氯化铝和硫酸铝.电化学交流阻抗谱显示铝合金7A04在0.6 mol/L NaCI+0.02 mol/0L NaHSO3溶液中的腐蚀速率远大于在0.6 mol/L NaCl溶液的腐蚀速率,并探讨了其腐蚀机理.
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| 关 键 词： | 大气腐蚀 干湿周浸腐蚀 失重法 电化学阻抗谱 |
The Corrosion Behavior of Aluminum Alloy 7A04 under Cyclic Wet-Dry Immersion Conditions |
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| Zhou Herong,Li Xiaogang,Xiao Kui,Dong Chaofang.The Corrosion Behavior of Aluminum Alloy 7A04 under Cyclic Wet-Dry Immersion Conditions[J].Rare Metal Materials and Engineering,2009,38(Z1). |
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| Authors: | Zhou Herong Li Xiaogang Xiao Kui Dong Chaofang |
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| Affiliation: | Zhou Herong1,Li Xiaogang1,2,Xiao Kui1,Dong Chaofang1 (1. University of Science , Technology Beijing,Beijing 100083,China) (2. Beijing Key Laboratory for Corrosion,Erosion , Surface Technology,Beijing 110016,China) |
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| Abstract: | The corrosion behavior of aluminum alloy 7A04 under cyclic wet-dry immersion conditions was investigated in 0.6 mol/L sodium chloride solution and 0.6 mol/L sodium chloride+0.02 mol/L sodium sulfite solution by Scanning electron microscopy (SEM),energy dispersive X-ray detection (EDS),X-ray photoelectron spectroscopy (XPS),mass loss method,mechanical capability test and electrochemical impedance spectroscopy (EIS). The results showed that the mass loss increases with corrosion time prolonging,and according ... |
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| Keywords: | atmospheric corrosion periodic wet-dry conditions mass loss EIS |
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