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中文摘要：
通过电化学交流阻抗谱（EIS）技术研究了铝稀土涂层在铜加速醋酸盐雾试验中的腐蚀行为，建立了等效电路模型并分析了相关电化学参数随时间的演变规律。结合扫描电镜、能谱分析了涂层腐蚀后的形貌及成分，阐释了电化学参数的演变规律。结果表明，盐雾试验第一阶段，铝稀土涂层由2个容抗弧组成，高频段对应致密层阻抗，低频段对应铝稀土涂层电化学反应阻抗；盐雾试验第二阶段，多孔层开始影响铝稀土涂层的电化学行为。
英文摘要：
The corrosion behavior of Al-RE coating studied with electrochemical impedance spectroscopy（EIS）, in copper accelerated acetic acid salt spray test（CASS） is and equivalent circuits are proposed, which is based on the physicochemical process of the corrosion. The evolution features of the corresponding electrochemical parameters are analyzed. Scanning electron microscope and X-ray energy-dispersive spectroscopy are used to analyze the microstructure of Al-RE coating, which is used to explain the evolution features of the corresponding electrochemical parameters. The results reveal that in the first stage of CASS, two capacitive impedance semicircles are seen in the complex plane plots. The high frequency semicircle responds to barrier layer, the low frequency semicircle responds to the electrochemical reaction of Al-RE coating. In the second stage of CASS, the electrochemical behavior is influenced by the porous layer.
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同项目期刊论文
Corrosion Behavior of Zincky Coatings Prepared by High Velocity Arc Spraying in Sodium Chloride-Cont
Study on the Component and Mechanical Property of the New High Abrasion Resistant Alloy Used in High
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