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投稿时间：2014-10-19 修订日期：2014-10-21
投稿时间：2014-10-19 修订日期：2014-10-21
中文摘要: 以氧化镁为原料，在MgF2-LiF-KCl电解质体系中采用熔盐电解制备铝镁合金，考查电解时间、电流强度对电流效率以及合金中镁含量的影响，并采用连续脉冲—计算机法测量电解过程反电动势的变化。结果表明，电流效率随电流密度和电解时间的增加先增大后减小；镁含量随电流强度的增加先增大后减小，随电解时间逐渐增大。在3 A的电流强度下电解2 h的电流效率达87%，加料前后平均反电动势降低0.5 V，氧化镁（1%）的加料周期约45 min。铝镁合金中镁浓度分布比较均匀，无明显偏析现象。
Abstract:Al-Mg alloy was prepared in MgF2-LiF-KCl electrolyte system by molten salt electrolysis with MgO as raw material. The effects of electrolysis duration and current intensity on current efficiency and magnesium content were investigated. Back EMF was measured by continuous pulse computer method. The results show that current efficiency rises first and then drops with increasing of current intensity and electrolysis duration. Magnesium content in alloy rises first and then drops with increasing of current intensity while rises with electrolysis duration. Current efficiency is 87% under electrolysis at I=3 A for 2 h. Back EMF decreases 0.5 V after feeding for 45 min. Magnesium is distributed evenly in Al-Mg alloy with no obvious segregation.
文章编号： 中图分类号： 文献标志码：
基金项目:国家自然科学基金资助项目(51204094)；鞍山市科技项目（2012MS02）
| 作者 | 单位 | |
| 张保国 | 辽宁科技大学 | zbg_23@163.com |
| 李继东* | 辽宁科技大学 | lijidong1014@163.com |
| 王一雍 | 辽宁科技大学 | |
| 张明杰 | 东北大学材料与冶金学院 |
| Author Name | Affiliation | |
| zhangbaoguo | University of Science and Technology Liaoning | zbg_23@163.com |
| lijidong | lijidong1014@163.com | |
| WANG Yi-yong | ||
| ZHANG Ming-jie |
引用文本：
张保国,李继东,王一雍,张明杰.熔盐电解法制备铝镁合金过程电流效率和反电动势研究[J].有色金属（冶炼部分）,2015(3):57-61.
zhangbaoguo,lijidong,WANG Yi-yong,ZHANG Ming-jie.Study on Current Efficiency and Back EMF during Preparation of Al-Mg Alloy by Molten Salt Electrolysis[J].Nonferrous Metals (Extractive Metallurgy),2015(3):57-61.
张保国,李继东,王一雍,张明杰.熔盐电解法制备铝镁合金过程电流效率和反电动势研究[J].有色金属（冶炼部分）,2015(3):57-61.
zhangbaoguo,lijidong,WANG Yi-yong,ZHANG Ming-jie.Study on Current Efficiency and Back EMF during Preparation of Al-Mg Alloy by Molten Salt Electrolysis[J].Nonferrous Metals (Extractive Metallurgy),2015(3):57-61.
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