| Effect of electrolysis superheat degree on anticorrosion performance of 5 Cu/（10NiO-NiFe2O4） cermet inert anode |
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| 引用本文： | 王家伟,赖延清,田忠良,刘业翔.Effect of electrolysis superheat degree on anticorrosion performance of 5 Cu/（10NiO-NiFe2O4） cermet inert anode[J].中南工业大学学报(英文版),2007,14(6):768-772. |
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| 作者姓名： | 王家伟 赖延清 田忠良 刘业翔 |
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| 作者单位： | School of Metallurgical Science and Engineering Central South University，School of Metallurgical Science and Engineering Central South University，School of Metallurgical Science and Engineering Central South University，School of Metallurgical Science and Engineering Central South University，Changsha 410083 China College of Materials Science and Metallurgy Engineering Guizhou University Guiyang 550003 China，Changsha 410083 China，Changsha 410083 China，Changsha 410083 China |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 5Cu/(10NiO-NiFe2O4) cermet inert anodes were prepared by cold-pressing and sintering process, and the effect of superheat degree of melting K3AlF6-Na3AlF6-AlF3 on their anticorrosion performance was studied under electrolysis conditions. The results show that, the fluctuation of cell becomes small with increasing of superheat degree, which is helpful to inhibit the formation of cathodic encrustation; the concentration of impurities from inert anode in bath goes up to certain degree, but it is far smaller than those in traditional high-temperature bath. Increasing the superheat degree of melting K3AlF6-Na3AlF6-AlF3 has unconspicuous effect on the contents of impurities in cathodic aluminum. The total mass fractions of Fe, Ni and Cu in aluminum are 15.38% and 15.09% respectively under superheat degree of 95 and 195 ℃. From micro-topography of anode used view, increasing the superheat degree can aggravate corrosion of metal Cu in inert anode, and has negative influence on electrical conductivity of electrode to some extent.
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| 关 键 词： | 金属陶瓷 惰性阳极 电解铝 过热度 |
| 收稿时间： | 5 June 2007 |
| 修稿时间： | 2007-06-05 |
Effect of electrolysis superheat degree on anticorrosion performance of 5Cu/(10NiO-NiFe2O4) cermet inert anode |
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| Wang Jia-wei , Lai Yan-qing , Tian Zhong-liang and Liu Ye-xiang.Effect of electrolysis superheat degree on anticorrosion performance of 5Cu/(10NiO-NiFe2O4) cermet inert anode[J].Journal of Central South University of Technology,2007,14(6):768-772. |
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| Authors: | Wang Jia-wei Lai Yan-qing Tian Zhong-liang and Liu Ye-xiang |
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| Affiliation: | 1. School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China; 2. College of Materials Science and Metallurgy Engineering, Guizhou University, Guiyang 550003, China |
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| Abstract: | 5Cu/(10NiO-NiFe2O4) cermet inert anodes were prepared by cold-pressing and sintering process, and the effect of superheat degree of melting
K3AlF6-Na3AlF6-AlF3 on their anticorrosion performance was studied under electrolysis conditions. The results show that, the fluctuation of cell
becomes small with increasing of superheat degree, which is helpful to inhibit the formation of cathodic encrustation; the
concentration of impurities from inert anode in bath goes up to certain degree, but it is far smaller than those in traditional
high-temperature bath. Increasing the superheat degree of melting K3AlF6-Na3AlF6-AlF3 has unconspicuous effect on the contents of impurities in cathodic aluminum. The total mass fractions of Fe, Ni and Cu in
aluminum are 15.38% and 15.09% respectively under superheat degree of 95 and 195 °C. From micro-topography of anode used view,
increasing the superheat degree can aggravate corrosion of metal Cu in inert anode, and has negative influence on electrical
conductivity of electrode to some extent.
Foundation item: Project (2005CB623703) supported by the Major State Basic Research and Development Program of China |
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| Keywords: | cermets inert anode aluminum electrolysis electrolysis corrosion superheat degree |
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