工程科学学报，第41卷，第10期：1315-1323,2019年10月 Chinese Journal of Engineering,Vol.41,No.10:1315-1323,October 2019 D0I:10.13374/j.issn2095-9389.2018.11.04.002;http://journals..ustb.eu.cn 铝棒低银铅合金表面陶瓷化复合阳极的制备与性能 闫文凯)，陈步明12)☒，冷和2)，黄惠12)，郭忠诚2)，徐瑞东) 1)昆明理工大学冶金与能源工程学院，昆明6500932)昆明理工恒达科技股份有限公司，昆明650106 ☒通信作者，E-mail:cbml2@qq.com 摘要为获得一种锌电积用低成本、低析氧电位和高催化活性的阳极，在铝棒表面通过挤压复合技术包覆P-0.2%Ag合 金得到A1棒Ph-0.2%Ag阳极.在含氟的硫酸溶液中，通过阳极氧化在Pb-0.2%Ag合金和A1棒P%-0.2%Ag合金阳极表面 形成具有高催化性能的膜层，采用显微图像分析仪和数显显微硬度计表征了膜层的厚度及硬度，并通过电子拉伸试验对比了 两种阳极的极限抗拉强度.采用X射线衍射、扫描电子显微镜、循环伏安法、阳极极化和交流阻抗法等技术手段研究了A!棒 P-0.2%Ag与P-0.2%Ag阳极表面氧化膜层的物相、形貌以及电化学性能.结果表明：A1棒Pb-0.2%Ag阳极相比Ph- 0.2%Ag阳极表面易生成致密较厚的氧化膜层，且膜层硬度提升了41.64%，其氧化膜层主要物相均为电催化活性良好的B- PbO,·新型阳极的极限抗拉强度是传统阳极的1.3倍，大大改善了阳极材料的机械性能.阳极极化曲线数据显示A!棒P- 0.2%AgP02阳极在电积锌体系中具有较低的析氧电位(1.35 V ts MSE,500Am2)和较高的交换电流密度(7.079×10~5A ·m2).循环伏安曲线和交流阻抗数据显示A1棒P%-0.2%Ag/Pb0,阳极具有较高的电催化活性、较大的表面粗糙度和较小的 电荷传质电阻.在电积锌实验中，栅栏型A1棒P%-0.2%Ag/Pb02阳极相比传统Pb-0.2%Ag阳极平均槽电压下降了75mV,而 且大大减少了阳极泥的产生 关键词Al棒Pb-0.2%Ag;表面陶瓷氧化；锌电积；机械性能；电催化活性 分类号TG142.71 Preparation and properties of Al-rod-Pb-0.2%Ag composite anode by surface ceramization YAN Wen-kai),CHEN Bu-ming,LENG He2),HUANG Hui),GUO Zhong-cheng2),XU Rui-dong 1)School of Metallurgical an Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China 2)Kunming Hendera of Science and Technology Co.LTD.,Kunming 650106,China Corresponding author,E-mail:cbml2@qq.com ABSTRACT To obtain a low-cost anode with low oxygen evolution potential and high catalytic activity for zinc electrowinning,Pb- 0.2%Ag alloy was coated on an aluminum matrix surface by extrusion cladding technology,and a film layer with high catalytic perform- ance was formed on the surface of the Pb-0.2%Ag alloy and Al-rod-Pb-0.2%Ag anode by anodization in a fluorine-containing sulfu- ric acid solution.The thickness and hardness of the film were studied using a microscopic image analyzer and digital microhardness tester,and the ultimate tensile strengths of the two anodes were compared using an electronic tensile tester.The phase,morphology, and electrochemical performance of the Al-rod-Pb-0.2%Ag and Pb-0.2%Ag anode surface film were investigated using X-ray dif- fractometry,scanning electron microscopy,cyclic voltammetry,anodic polarization,and electrochemical impedance spectroscopy.The results show that the Al-rod-Pb-0.2%Ag anode surface forms a dense and thick oxide film layer more easily than the Pb-0.2%Ag 收稿日期：2018-11-04 基金项目：国家自然科学基金资助项目(51564029,51874154,51504111)：云南省技术创新人才培养对象资助项目(2019HB111):昆明理工大 学分析测试基金资助项目(2017T20090100,2017M20162102014)工程科学学报,第 41 卷,第 10 期:1315鄄鄄1323,2019 年 10 月 Chinese Journal of Engineering, Vol. 41, No. 10: 1315鄄鄄1323, October 2019 DOI: 10. 13374 / j. issn2095鄄鄄9389. 2018. 11. 04. 002; http: / / journals. ustb. edu. cn 铝棒低银铅合金表面陶瓷化复合阳极的制备与性能 闫文凯1) , 陈步明1,2) 苣 , 冷 和2) , 黄 惠1,2) , 郭忠诚1,2) , 徐瑞东1) 1)昆明理工大学冶金与能源工程学院, 昆明 650093 2) 昆明理工恒达科技股份有限公司, 昆明 650106 苣通信作者, E鄄mail: cbm12@ qq. com 摘 要 为获得一种锌电积用低成本、低析氧电位和高催化活性的阳极,在铝棒表面通过挤压复合技术包覆 Pb鄄鄄0郾 2% Ag 合 金得到 Al 棒 Pb鄄鄄0郾 2% Ag 阳极. 在含氟的硫酸溶液中,通过阳极氧化在 Pb鄄鄄0郾 2% Ag 合金和 Al 棒 Pb鄄鄄0郾 2% Ag 合金阳极表面 形成具有高催化性能的膜层, 采用显微图像分析仪和数显显微硬度计表征了膜层的厚度及硬度,并通过电子拉伸试验对比了 两种阳极的极限抗拉强度. 采用 X 射线衍射、扫描电子显微镜、循环伏安法、阳极极化和交流阻抗法等技术手段研究了 Al 棒 Pb鄄鄄0郾 2% Ag 与 Pb鄄鄄0郾 2% Ag 阳极表面氧化膜层的物相、形貌以及电化学性能. 结果表明: Al 棒 Pb鄄鄄 0郾 2% Ag 阳极相比Pb鄄鄄 0郾 2% Ag 阳极表面易生成致密较厚的氧化膜层,且膜层硬度提升了 41郾 64% ,其氧化膜层主要物相均为电催化活性良好的 茁鄄鄄 PbO2 . 新型阳极的极限抗拉强度是传统阳极的 1郾 3 倍,大大改善了阳极材料的机械性能. 阳极极化曲线数据显示 Al 棒 Pb鄄鄄 0郾 2% Ag / PbO2阳极在电积锌体系中具有较低的析氧电位(1郾 35 V vs MSE, 500 A·m - 2 )和较高的交换电流密度(7郾 079 伊 10 - 5 A ·m - 2 ). 循环伏安曲线和交流阻抗数据显示 Al 棒 Pb鄄鄄0郾 2% Ag / PbO2阳极具有较高的电催化活性、较大的表面粗糙度和较小的 电荷传质电阻. 在电积锌实验中,栅栏型 Al 棒 Pb鄄鄄0郾 2% Ag / PbO2阳极相比传统 Pb鄄鄄0郾 2% Ag 阳极平均槽电压下降了75 mV,而 且大大减少了阳极泥的产生. 关键词 Al 棒 Pb鄄鄄0郾 2% Ag; 表面陶瓷氧化; 锌电积; 机械性能; 电催化活性 分类号 TG142郾 71 收稿日期: 2018鄄鄄11鄄鄄04 基金项目: 国家自然科学基金资助项目(51564029,51874154,51504111);云南省技术创新人才培养对象资助项目(2019HB111);昆明理工大 学分析测试基金资助项目(2017T20090100,2017M20162102014) Preparation and properties of Al鄄鄄rod鄄鄄Pb鄄鄄0郾 2% Ag composite anode by surface ceramization YAN Wen鄄kai 1) , CHEN Bu鄄ming 1,2)苣 , LENG He 2) , HUANG Hui 1,2) , GUO Zhong鄄cheng 1,2) , XU Rui鄄dong 1) 1) School of Metallurgical an Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China 2) Kunming Hendera of Science and Technology Co. LTD. , Kunming 650106, China 苣Corresponding author, E鄄mail: cbm12@ qq. com ABSTRACT To obtain a low鄄cost anode with low oxygen evolution potential and high catalytic activity for zinc electrowinning, Pb鄄鄄 0郾 2% Ag alloy was coated on an aluminum matrix surface by extrusion cladding technology, and a film layer with high catalytic perform鄄 ance was formed on the surface of the Pb鄄鄄0郾 2% Ag alloy and Al鄄鄄rod鄄鄄Pb鄄鄄0郾 2% Ag anode by anodization in a fluorine鄄containing sulfu鄄 ric acid solution. The thickness and hardness of the film were studied using a microscopic image analyzer and digital microhardness tester, and the ultimate tensile strengths of the two anodes were compared using an electronic tensile tester. The phase, morphology, and electrochemical performance of the Al鄄鄄rod鄄鄄Pb鄄鄄0郾 2% Ag and Pb鄄鄄0郾 2% Ag anode surface film were investigated using X鄄ray dif鄄 fractometry, scanning electron microscopy, cyclic voltammetry, anodic polarization, and electrochemical impedance spectroscopy. The results show that the Al鄄鄄rod鄄鄄 Pb鄄鄄0郾 2% Ag anode surface forms a dense and thick oxide film layer more easily than the Pb鄄鄄0郾 2% Ag