| EFFECT OF Cu-Ni CONTENT ON THE CORROSION RESISTANCE OF （Cu-Ni）/（10NiO-90NiFe204） CERMET INERT ANODE FOR ALUMINUM ELECTROLYSIS |
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| 作者姓名： | Z.L. Tian Y.Q. Lai J. Li Y.X. Liu |
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| 作者单位： | Z.L. Tian（School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China） ;
Y.Q. Lai（School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China） ;
J. Li（School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China） ;
Y.X. Liu（School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China） ; |
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| 基金项目： | The authors gratefully acknowledge financial support from National Basic Research Program of China，国家自然科学基金 |
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| 摘 要： | （Cu-Ni）/（10NiO-90NiFe204） cermet inert anodes containing metal Cu-Ni0, 5, 10, 15 and 20 wt pct were prepared and their corrosion resistance to Na3AlF6-Al2O3 melts was investigated. The results indicate that the content of metal Cu-Ni has little effect on the steady-state concentration of Ni in the electrolyte and the values could not be used to effectively differentiate their corrosion resistance. The steady-state concentration of Fe decreases from 304×10^-6 to 168×10^-6 and that of Cu increases from 21×10^-6 to 71×10^-6 with the content of metal Cu-Ni increasing from 0 to 20 wt pct. Post-examination shows that metallic phase Cu-Ni is corroded preferentially during electrolysis and many pores are left at the anode surface. Considering the corrosion resistance and electrical conductivity, the cermet containing metal Cu-Ni 5 wt pct should be selected and studied further.
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| 关 键 词： | 铝电解 NiFe2O4 金属陶瓷 金属腐蚀 |
| 收稿时间： | 2007-04-23 |
| 修稿时间： | 2007-06-07 |
Effect of Cu-Ni Content on the Corrosion Behavior of (Cu-Ni)/(10NiO-90NiFe2O4) Cermet inert anodes for Aluminum Electrolysis |
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| Z.L. Tian Y.Q. Lai J. Li Y.X. Liu.Effect of Cu-Ni Content on the Corrosion Behavior of (Cu-Ni)/(10NiO-90NiFe2O4) Cermet inert anodes for Aluminum Electrolysis[J].Acta Metallurgica Sinica(English Letters),2008,21(1):72-78. |
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| Authors: | ZL Tian YQ Lai J Li |
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| Affiliation: | Central South University |
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| Abstract: | (Cu-Ni)/(10NiO-9ONiFe2O4 ) cermet inert anodes containing metal Cu-Ni 0,5, 10, 15 and 20 wt pet were prepared and their corrosion resistance to Na3AlF6-Al2O3 melts was investigated. The results indicate that the content of metal Cu-Ni has little effect on the steady-state concentration of Ni in the electrolyte and the values could not be used to effectively differentiate their corrosion resistance. The steady-state concentration of Fe decreases from 304×10-8 to 168×10-6 and that of Cu increases from 21×10-6 to 71×10-6 with the content of metal Cu-Ni increasing from 0 to 20 wt pct. Post-examination shows that metallic phase Cu-Ni is corroded preferentially during electrolysis and many pores are left at the anode surface. Considering the corrosion resistance and electrical conductivity, the cermet containing metal Cu-Ni 5 wt pct should be selected and studied further. |
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| Keywords: | Aluminum electrolysis Inert anode NiFe2O4 based cermet Corrosion resistance |
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