Corrosion of Zinc Ferrite Based Inert Anodes in AlF3-NaF-Al2O3 Melts Under Conditions of Anodic Polarization
来源期刊：JOURNAL OF RARE EARTHS2006年增刊第2期
论文作者：Dong Yunhui Zhao Zengdian Zhang Lipeng Yu Xianjin
Key words：ZnFe2O4-based materials; inert anode; anodic polarization; corrosion behaviors;
Abstract: ZnFe2O4-based inert anodes were made to conduct the aluminum electrolysis tests. The corrosion behaviors of the inert anodes were examined and discussed. Experiment results prove that: (1) ZnFe2O4-based inert anodes are good corrosion resistant to AlF3-NaF-Al2O3 melts under the conditions of anodic polarization; (2) High anodic current density(＞1.5 A·cm-2), high alumina concentration and low ratio of NaF/AlF3 in the molten salts will be the most important conditions for using inert anode.
Dong Yunhui1，Zhao Zengdian1，Zhang Lipeng1，Yu Xianjin1
(1.School of Chemical Engineering, Shandong University of Technology, Zibo 255049, China;
2.School of Materials and Metallurgy, Northeast University, Shenyang 110006, China)
Abstract:ZnFe2O4-based inert anodes were made to conduct the aluminum electrolysis tests. The corrosion behaviors of the inert anodes were examined and discussed. Experiment results prove that: (1) ZnFe2O4-based inert anodes are good corrosion resistant to AlF3-NaF-Al2O3 melts under the conditions of anodic polarization; (2) High anodic current density(＞1.5 A·cm-2), high alumina concentration and low ratio of NaF/AlF3 in the molten salts will be the most important conditions for using inert anode.
Key words:ZnFe2O4-based materials; inert anode; anodic polarization; corrosion behaviors;
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