| 温度对铂钽复合阳极电化学性能的影响 |
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| 引用本文： | 李清延,闫永贵,马力,赵程.温度对铂钽复合阳极电化学性能的影响[J].腐蚀与防护,2009(9). |
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| 作者姓名： | 李清延 闫永贵 马力 赵程 |
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| 作者单位： | 青岛科技大学机电工程学院;中船重工七二五研究所;海洋腐蚀与防护国防科技重点实验室;中船重工七二五研究所海洋腐蚀与防护国防科技重点实验室; |
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| 摘 要： | 对铂钽复合阳极在200 mA/cm2的电流密度下进行了恒电流试验,通过测量动电位极化曲线以及电化学阻抗谱,研究了阳极在不同温度海水中的电化学行为,利用扫描电镜(SEM)及能谱仪(EDS)对阳极形貌及成分进行了分析。电化学试验结果表明,铂钽复合阳极能承载较大的电流密度;随温度的降低,法拉第电荷传递电阻增大,阳极电化学催化活性有所下降。SEM分析结果表明,阳极表面有微裂纹,阳极工作时表面有大量气体析出,加速了阳极的溶解。
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| 关 键 词： | 复合阳极 动电位极化 阻抗 阳极氧化 |
Effect of Temperature on Electrochemical Properties of Pt/Ta Composite Anode |
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| LI Qing-yan,YAN Yong-gui,MA Li,ZHAO Cheng.Effect of Temperature on Electrochemical Properties of Pt/Ta Composite Anode[J].Corrosion & Protection,2009(9). |
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| Authors: | LI Qing-yan YAN Yong-gui MA Li ZHAO Cheng |
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| Affiliation: | 1.Qingdao University of Science & Technology;Qingdao 266061;China;2.State key laboratory for marine corrosion and protection;Luoyang Ship Material Research Institute;Qingdao 266071;China |
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| Abstract: | Pt/Ta composite anode was tested at a constant current density of 200 mA/cm2.The electrochemical properties was characterized by potentindynamic polarization curves and electrochemical impedance spectroscopy(EIS) in seawater at different temperatures,in combination with SEM morphology observation and energy disperse spectroscopy(EDS).The results showed that Pt/Ta composite anode could load large current density.Electrochemical catalytic activity of the anode decreased relatively and the charge transfer resi... |
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| Keywords: | composite anode potentiodynamic polarization impedance anodic oxidation |
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