| 7A04铝合金在周浸试验中的腐蚀行为研究 |
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| 引用本文： | 蔡健平,范林.7A04铝合金在周浸试验中的腐蚀行为研究[J].装备环境工程,2011,8(1):53-56,69. |
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| 作者姓名： | 蔡健平 范林 |
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| 作者单位： | 1. 北京航空材料研究院,北京,100095
2. 北京科技大学,腐蚀中心,北京,100083 |
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| 基金项目： | 国防科技工业技术基础科研项目(H052006A004) |
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| 摘 要： | 采用周期浸泡的腐蚀试验方法,并通过电化学阻抗谱(EIS)、扫描电子显微镜(SEM)等检测技术,研究了7A04铝合金的腐蚀行为和腐蚀机理.结果表明,7A04铝合金的腐蚀动力学符合幂函数规律,其腐蚀历程为由点蚀经短暂的晶间腐蚀后快速发展为剥蚀,EIS由高中频3个容抗弧和低频收缩的感抗弧组成.
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| 关 键 词： | 7A04铝合金 腐蚀机理 周期浸润试验 电化学交流阻抗谱 |
| 收稿时间： | 2010/6/24 0:00:00 |
| 修稿时间： | 2011/2/15 0:00:00 |
Study of 7A04 Aluminum Corrosion Behavior in Alternate Immersion Test |
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| CAI Jian-ping and FAN Lin.Study of 7A04 Aluminum Corrosion Behavior in Alternate Immersion Test[J].Equipment Environmental Engineering,2011,8(1):53-56,69. |
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| Authors: | CAI Jian-ping and FAN Lin |
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| Institution: | CAI Jian-ping1,FAN Lin1(1.Beijing Institute of Aeronautical Materials,Beijing 100095,China,2.University of science and technology Beijing,Beijing 100083,China) |
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| Abstract: | The corrosion mechanism and behavior of 7A04 aluminum alloys was studied by alternate immersion corrosion test,associated with EIS,SEM examination.The results showed that the corrosion kinetics of 7A04 obey exponential law;the corrosion of 7A04 starts from pitting,and develops to exfoliation corrosion rapidly;EIS of 7A04 consists of three high-intermediate frequency capacitive curves and a low frequency shrinking inductive curve. |
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| Keywords: | 7A04 aluminum alloy corrosion mechanism alternate immersion corrosion test electrochemical impedance spectroscopy |
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