东北大学学报:自然科学版 ›› 2016, Vol. 37 ›› Issue (7): 964-968.DOI: 10.12068/j.issn.1005-3026.2016.07.012

• 材料与冶金 • 上一篇    下一篇

MgCl2-KCl-AlF3-(La2O3)熔盐体系电解制备Al-Mg-La中间合金

张福男1,2, 王兆文1   

  1. (1. 东北大学 冶金学院, 辽宁 沈阳110819; 2. 金策工业综合大学, 朝鲜 平壤999093)
  • 收稿日期:2015-05-11 修回日期:2015-05-11 出版日期:2016-07-15 发布日期:2016-07-13
  • 通讯作者: 张福男
  • 作者简介:张福男(1980-),男,朝鲜平壤人,金策工业综合大学讲师,东北大学访问学者; 王兆文(1964-),男,辽宁沈阳人,东北大学教授,博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51074053).

Electrolytic Preparation of Al-Mg-La Master Alloys from MgCl2-KCl- AlF3-(La2O3) Molten Salt

JANG Pok-nam1,2, WANG Zhao-wen1   

  1. 1. School of Metallurgy, Northeastern University, Shenyang 110819, China; 2. Kim Chaek University of Technology, Pyongyang 999093, DPR of Korea.
  • Received:2015-05-11 Revised:2015-05-11 Online:2016-07-15 Published:2016-07-13
  • Contact: WANG Zhao-wen
  • About author:-
  • Supported by:
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摘要: 在质量比为41.5∶48.5∶10的MgCl2-KCl-AlF3熔盐体系中加入质量分数为0.6%La2O3,利用电解法制备了Al-Mg-La合金.用ICP-OES(电感耦合等离子体光谱仪)和XRD进行了合金的组成和物相分析.研究结果表明,在电解温度800℃,阴极电流密度6.92A/cm2,槽电压5.3~5.4V,电解时间为1h的条件下,电流效率为86.2%,得到的合金主相为α-Mg基体、β-Al12Mg17相与Al11La3相.高的阴极电流密度有利于合金中镁含量的增加.

关键词: 稀土La, Al-Mg-La中间合金, MgCl2-KCl系, MgCl2-KCl-AlF3-La2O3熔盐体系, Al12Mg17

Abstract: 0.6 wt% of La2O3 was dissolved in MgCl2-KCl-AlF3 molten salt system (with mass ratio of 41.5∶48.5∶10). Al-Mg-La master alloy was prepared by electrolysis process. Inductively coupled plasma-optical emission spectroscopy (ICP-OES) and X-ray diffraction (XRD) analysis were used to determine the composition and phases of the alloy. The results show that,the current efficiency can reach 86.2%, and the main alloy phases are α-Mg, β- Al12Mg17 and Al11La3 under the electrolysis conditions of 800℃ of electrolytic temperature, 6.92A/cm2 of cathode current density, 5.3~5.4V of the cell voltage, and 1 hour of electrolysis time. High cathode current density is helpful to increase the magnesium content in the alloy.

Key words: rare-earth La, Al-Mg-La master alloy, MgCl2-KCl system, MgCl2-KCl-AlF3-La2O3 molten salt, Al12 Mg17 phase

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