2B96K铝锂合金剥蚀过程的电化学阻抗研究

详细信息

Electrochemical Impedance Spectroscopy during Exfoliation Corrosion Process of 2B96K Al-Li Alloy

摘要: 研究了不同时效状态下的 2B96K铝锂合金在EXCO溶液中剥蚀的电化学阻抗特征.结果表明,腐蚀初期,合金的电化学阻抗谱由一个容抗弧及一个感抗弧组成,一旦发生剥蚀,即变成两个容抗弧.对于欠时效合金,这两个容抗弧出现的时间较长,表明其剥蚀发展较慢.对电化学阻抗谱进行了拟合分析,得到了剥蚀的相关信息,如剥蚀的发展及形貌等.
- 剥蚀 /
- Al-Li合金 /
- 电化学阻抗谱(EIS)
Abstract: The electrochemical impedance spectroscopy (EIS) during exfoliation corrosion process of 2B96K Al-Li alloy with different aging treatments in EXCO solution was studied.At the beginning of corrosion,the EIS was comprised of a capacitive arc and an inductive loop.Once exfoliation corrosion occurred,two capacitive arcs appeared.The longer appearance time of two capacitive arcs of the under-aged alloy indicated its slower corrosion development.The simulated EIS analysis was done,the information such as developing and feature of exfoliation corrosion was goet.
- exfoliation corrosion /
- Al-Li alloy /
- electrochemical impedance spectroscopy (EIS)

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