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Electrochemical Impedance Spectroscopy Studies of a Double Strand Polyaniline Coating on Aluminum Alloys in Acidic Environments

机译:酸性环境下铝合金双链聚苯胺涂层的电化学阻抗谱研究

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Electrochemical impedance spectroscopy (EIS) results are presented for a polyaniline double strand conductive polymer coating applied to aluminum alloys. EIS tests were performed in a 0.5 N NaCl solution buffered at pH 3.6 for several months. Results are compared to Alodine 600 and 1200 chromate conversion coatings. Results show at least a one order of magnitude higher charge transfer resistance for the conductive polymer coating over the Alodine coatings on AA2024-T3 and AA7075-T6 aluminum alloys in acidic environments. Implications for this improved performance of the conductive polymer coating in acidic environments is discussed.
机译:给出了应用于铝合金的聚苯胺双链导电聚合物涂层的电化学阻抗谱(EIS)结果。 EIS测试在pH值为3.6的0.5 N NaCl溶液中进行了几个月的测试。将结果与Alodine 600和1200铬酸盐转化膜进行比较。结果表明,在酸性环境中,AA2024-T3和AA7075-T6铝合金上的Alodine涂层比导电聚合物涂层的电荷转移电阻高至少一个数量级。讨论了在酸性环境中导电聚合物涂层的这种改进性能的含义。

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