周向阳,Wang Shuai,Ma Chi-yuan,Long Bo,Wang Hui,杨娟,郭忠诚,陈步明.银含量和β-PbO2镀层Al/Pb-Ag合金性能的影响[J].稀有金属材料与工程,2018,47(7):1999~2004.[Zhou Xiangyang,Shuai Wang,Chi-yuan Ma,Bo Long,Hui Wang,Juan Yang,Zhong-cheng Guo,Bu-ming Chen.Effect of the content of Ag and β-PbO2 plating on the properties of Al/Pb-Ag alloy[J].Rare Metal Materials and Engineering,2018,47(7):1999~2004.]
银含量和β-PbO2镀层Al/Pb-Ag合金性能的影响
投稿时间:2016-11-15  修订日期:2017-06-15
中文关键词:  Al/Pb-Ag合金  镀β-PbO2  析氧活性  电积锌
基金项目:催化燃烧用非贵金属梯度功能层/多孔金属介质复合材料的研究; 高容量/高倍率碳素电极的自组装制备及其储能机理研究;湿法冶金用三维通孔Al/Pb梯度功能阳极的设计与制备
中文摘要:
      Al/Pb-Ag合金由于具有优秀的导电性和机械性能而有可能被作为一种不溶性阳极应用在电积锌中。本文用循环伏安曲线(CV)、阳极极化曲线、电化学阻抗曲线(EIS)和腐蚀速率测试研究了不同银含量和镀层的Al/Pb-Ag阳极的阳极行为和反应动力学;用X射线衍射仪和扫描电镜观察了阳极氧化膜层的组分和表面形貌。实验结果表明,电镀β-PbO2和高含量的银都能提高阳极的析氧活性、电催化活性以及耐腐蚀性。 Al/Pb-0.75%Ag镀β-PbO2具有最低的析氧过电位,其次是Al/Pb-0.3%Ag镀β-PbO2,再其次是Al/Pb-0.75%Ag,最后是Al/Pb-0.3%Ag。然而,与镀β-PbO2相比,高含量的银更能有助于提高阳极的耐腐蚀性。此外,四种阳极层的物相是α-PbO2,β-PbO2,Pb和PbO。
Effect of the content of Ag and β-PbO2 plating on the properties of Al/Pb-Ag alloy
英文关键词:Al/Pb-Ag alloy  plating β-PbO2  oxygen evolution activity  zinc electrowinning
英文摘要:
      Due to the excellent electrical conductivity and mechanical properties, Al/Pb-Ag alloy has a great potential to be used as an alternative anode for zinc electrowinning. In this work, the effects of Ag content and surface plating with β-PbO2 on the anodic behavior and reaction kinetics have been investigated by cyclic voltammetry (CV), anodic polarization curves, electrochemical impedance spectroscopy (EIS) and corrosion rate test. The phase composition and microscopic morphology of the anode oxide layers after electrolysis were observed by X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. The results indicate that both increasing Ag content and electroplating β-PbO2 layer contribute to the improvement of oxygen evolution activity, electrocatalytic activity and corrosion resistance of the anodes. Al/Pb-0.75%Ag plating β-PbO2 has the lowest oxygen evolution overpotential followed by that of Al/Pb-0.3%Ag plating β-PbO2, Al/Pb-0.75%Ag and Al/Pb-0.3%Ag. Besides, high content of silver is more benefit to improve corrosion resistance compared with electroplating β-PbO2 on anode. In addition, the phase composition of four anodes layer are mainly composed of α-PbO2, β-PbO2, Pb and PbO.
作者单位E-mail
周向阳 中南大学 646872865@qq.com 
Wang Shuai 中南大学  
Ma Chi-yuan 中南大学  
Long Bo 中南大学  
Wang Hui 中南大学  
杨娟 中南大学  
郭忠诚 昆明理工大学 guozhch@vip.163.com 
陈步明 昆明理工大学 272601291@qq.com 
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