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. CAI Jian-ping,FAN Lin.Study of 7A04 Aluminum Corrosion Behavior in Alternate Immersion Test[J].Equipment Environmental Engineering,2011,8(1):53-56,69. |
7A04铝合金在周浸试验中的腐蚀行为研究 |
Study of 7A04 Aluminum Corrosion Behavior in Alternate Immersion Test |
投稿时间:2010-06-24 修订日期:2011-02-15 |
DOI: |
中文关键词: 7A04铝合金 腐蚀机理 周期浸润试验 电化学交流阻抗谱 |
英文关键词:7A04 aluminum alloy corrosion mechanism alternate immersion corrosion test electrochemical impedance spectroscopy |
基金项目:国防科技工业技术基础科研项目 (H052006A004) |
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中文摘要: |
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。 |
英文摘要: |
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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