Properties of a new type Al/Pb-0.3%Ag alloy composite anode for zinc electrowinning

作     者：Hai-tao Yang Huan-rong Liu Yong-chun Zhang Bu-ming Chen Zhong-cheng Guo Rui-dong Xu 

作者机构：Faculty of Metallurgical and Energy EngineeringKunming University of Science and Technology Faculty of Land Resource EngineeringKunming University of Science and Technology Kunming Hendera Science and Technology Co.Ltd. State Key Laboratory Breeding Base of Complex Nonferrous Metal Resources Cleaning Utilization 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2013年第20卷第10期

页      面：986-993页

核心收录：

学科分类：080603[工学-有色金属冶金] 0709[理学-地质学] 0819[工学-矿业工程] 0806[工学-冶金工程] 08[工学] 0708[理学-地球物理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：financially supported by the National Natural Science Foundation of China(No.51004056) the Opening Foundation of the Key Laboratory of Inorganic Coating Materials,Chinese Academy of Sciences(No.KKZ6201152009) the Specialized Research Fund for the Doctoral Program of Higher Education(No.20125314110011) the Applied Basic Research Foundation of Yunnan Province,China(No.2010ZC052) the Analysis and Testing Foundation of Kunming University of Science and Technology(Nos.2010203 and 2011173) 

主　　题：composite anodes corrosion resistance oxygen evolution reaction electrocatalytic activity zinc electrowin-ning 

摘      要：An A1/Pb-0.3%Ag alloy composite anode was produced via composite casting. Its electrocatalytic activity for the oxygen evolution reaction and corrosion resistance was evaluated by anodic polarization curves and accelerated corro- sion test, respectively. The microscopic morphologies of the anode section and anodic oxidation layer during accelerated corrosion test were obtained by scanning electron microscopy. It is found that the composite anode （hard anodizing） dis- plays a more compact interracial combination and a better adhesive strength than plating tin. Compared with industrial Pb-0.3%Ag anodes, the oxygen evolution overpotentials of A1/Pb-0.3%Ag alloy （hard anodizing） and A1/Pb-0.3%Ag alloy （plating tin） at 500 A.m-2 were lower by 57 and 14 mV, respectively. Furthermore, the corrosion rates of Pb-0.3%Ag alloy, A1/Pb-0.3%Ag alloy （hard anodizing）, and A1/Pb-0.3%Ag alloy （plating tin） were 13.977, 9.487, and 11.824 g.m-2.h-1, respectively, in accelerated corrosion test for 8 h at 2000 A-m-2. The anodic oxidation layer of A1/Pb-0.3%Ag alloy （hard anodizing） is more compact than Pb-0.3%Ag alloy and A1/Pb-0.3%Ag alloy （plating tin） after the test.