| Effect of TiB2 content on resistance to sodium penetration of TiB2／C cathode composites for aluminium electrolysis |
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| 引用本文： | 李劼,方静,李庆余,赖延清.Effect of TiB2 content on resistance to sodium penetration of TiB2／C cathode composites for aluminium electrolysis[J].中南工业大学学报(英文版),2004,11(4):400-404. |
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| 作者姓名： | 李劼 方静 李庆余 赖延清 |
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| 作者单位： | [1]SchoolofMetallurgicalScienceandEngineering,CentralSouthUniversity,Changsha410083,China [2]SchoolofMetallurgicalScienceandEngineering,CentralSouthUniversity,Changsha410083,China／／DepartmentofChemistry,GuangxiNormalUniversity,Guilin541004,China |
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| 摘 要： | TiB2/C cathode composites with various contents of TiB2 were prepared and their characterizations were observed and compared. The expansion of samples due to sodium and bath penetration was tested with a modified laboratory Rapoport apparatus and the appearances of the cut sections of specimens after electrolysis were studied.The results show that the mass of TiB2/C cathode composites with mass fraction of TiB2 less than 70% appreciably increases, but that of the composites with mass fraction of TiB2 more than 70% decreases slightly after being baked.The resistance to sodium and bath penetration of TiB2/C cathode composites increases with the increase of TiB2 content, especially in the composites with high TiB2 content. TiB2/C cathode composites have high resistance to the penetration of sodium and bath as well as good wettability by molten aluminum, and keep integrality and have little change of appearance after electrolysis, which indicates that TiB2/C cathode composites can be used as inert wettable cathode for aluminum electrolysis.
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| 关 键 词： | 铝电解 TiB2 阴极 复合材料 钠渗透 |
| 收稿时间： | 22 September 2003 |
| 修稿时间： | 27 December 2003 |
Effect of TiB2 content on resistance to sodium penetration of TiB2/C cathode composites for aluminium electrolysis |
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| Li Jie , Fang Jing , Li Qing-yu and Lai Yan-qing.Effect of TiB2 content on resistance to sodium penetration of TiB2/C cathode composites for aluminium electrolysis[J].Journal of Central South University of Technology,2004,11(4):400-404. |
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| Authors: | Li Jie Fang Jing Li Qing-yu and Lai Yan-qing |
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| Affiliation: | (1) School of Metallurgical Science and Engineering, Central South University, 410083 Changsha, China;(2) Department of Chemistry, Guangxi Normal University, 541004 Guilin, China |
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| Abstract: | TiB2/C cathode composites with various contents of TiB2 were prepared and their characterizations were observed and compared. The expansion of samples due to sodium and bath penetration
was tested with a modified laboratory Rapoport apparatus and the appearances of the cut sections of specimens after electrolysis
were studied. The results show that the mass of TiB2/C cathode composites with mass fraction of TiB2 less than 70% appreciably increases, but that of the composites with mass fraction of TiB2 more than 70% decreases slightly after being baked. The resistance to sodium and bath penetration of TiB2/C cathode composites increases with the increase of TiB2 content, especially in the composites with high TiB2 content. TiB2/C cathode composites have high resistance to the penetration of sodium and bath as well as good wettability by molten aluminum,
and keep integrality and have little change of appearance after electrolysis, which indicates that TiB2/C cathode composites can be used as inert wettable cathode for aluminum electrolysis.
Foundation item: Project (G1999064903) supported by the National Key Fundamental Research and Development Program of China |
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| Keywords: | aluminium electrolysis TiB2 cathode composite material sodium penetration |
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