| Mn~(2+)对涂层钛阳极性能的影响 |
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| 引用本文： | 刘坤,刘贵昌.Mn~(2+)对涂层钛阳极性能的影响[J].海洋环境科学,2009,28(2). |
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| 作者姓名： | 刘坤 刘贵昌 |
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| 作者单位： | 大连理工大学化工学院材料化工系,辽宁大连,116012 |
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| 摘 要： | 针对电解海水防污工艺中钛阳极经常遇到的Mn2+污染问题,本文首先对实际运行失效的钛阳极进行分析,再在实验室模拟钛阳极在含Mn2+的海水中的电解失效情况.通过电流效率测试,电化学交流阻抗谱测试,SEM,电子探针等测试方法详细考察了海水中的杂质Mn2+对涂层阳极性能的影响.结果表明,海水中Mn2+的存在是导致钛阳极失效的重要原因.电解过程中,Mn2+在阳极形成MnO2沉积层,增大阳极表面电阻,降低了阳极的电流效率;另一方面,MnO2的形成也会影响阳极表面的电流的均匀分布,导致阳极涂层机械破裂,加速阳极涂层失效.
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| 关 键 词： | 涂层阳极(DSA) 热分解 Mn2 污染 电流效率 |
Effect of Mn~(2+) on properties of anode coating |
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| LIU Kun,LIU Gui-chang.Effect of Mn~(2+) on properties of anode coating[J].Marine Environmental Science,2009,28(2). |
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| Authors: | LIU Kun LIU Gui-chang |
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| Institution: | Department of Material and Chemical Engineering;Dalian University of Technology;Dalian 116012;China |
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| Abstract: | In the current study,the titanium anode contaminated by Mn2+ in the electrolysis antifouling process in seawater was discussed.Based on the analysis of the existing de-active titanium anode,the process of this degradation behavior was simulated.The effects of manganese iron on the anode coatings were studied with the current efficiency,electrochemical impedance spectroscopy investigation(EIS),scanning electron microscopy and electronic probe microanalysis(EPMA).The results showed that the manganese ion in s... |
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