| Electrolytic reduction of mixed solid oxides in molten salts for energy efficient production of the TiNi alloy |
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| 作者姓名： | ZHU Yong MA Meng WANG Dihua JIANG Kai HU Xiaohong JIN Xianbo George Z. CHEN |
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| 作者单位： | [1]College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China [2]School of Chemical, Environmental and Mining Engineering, Univer- sity of Nottingham, University Park, Nottingham NG7 2RD, UK |
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| 基金项目： | This work was supported by the National Natural Science Foundation of China （Grant Nos 20125308 and 20573081）. |
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| 摘 要： | Fast and energy efficient technologies for material production are essential for the sustainable develop- ment of human society. The TiNi alloy is an important intelligent material1], having high abrasive resistance, superior elasticity and good shape me…
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| 关 键 词： | 熔盐电解 电解还原 钛镍合金 节能 |
| 收稿时间： | 2006-03-27 |
| 修稿时间： | 2006-03-272006-04-17 |
Electrolytic reduction of mixed solid oxides in molten salts for energy efficient production of the TiNi alloy |
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| ZHU Yong MA Meng WANG Dihua JIANG Kai HU Xiaohong JIN Xianbo George Z. CHEN.Electrolytic reduction of mixed solid oxides in molten salts for energy efficient production of the TiNi alloy[J].Chinese Science Bulletin,2006,51(20):2535-2540. |
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| Authors: | Yong Zhu Meng Ma Dihua Wang Kai Jiang Xiaohong Hu Xianbo Jin George Z Chen |
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| Institution: | (1) College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China;(2) School of Chemical, Environmental and Mining Engineering, University of Nottingham, University Park, Nottingham, NG7 2RD, UK |
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| Abstract: | Direct electrochemical reduction of mixed TiO2 and NiO powders to TiNi alloy has been successfully demonstrated in molten CaCl2 at 900°C by constant voltage electrolysis. The electrolysis energy consumption was as low as 23.4 kWh/kg-TiNi, although the
current efficiency was 20.5% in the preliminary experiments. During the process, NiO was first reduced to Ni at high speed,
accompanied by TiO2 being perovskitized to CaTiO3-x
which was gradually reduced to Ni3Ti and TiNi, assisted by the depolarization of the preformed Ni. The cell voltage for preparation of the TiNi alloy was lower
than that for Ti. Adjusting the cell voltage not only affected the reduction speed, but also offered a convenient access to
the preparation of the nickel/perovskite composite. |
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| Keywords: | molten salt electrolysis electroreduction titanium-nickel alloy energy saving |
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