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

doi:10.12068/j.issn.1005-3026.2016.07.012

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

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. 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-nam^1,2， WANG Zhao-wen¹

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/Abstract

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相

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 Al₁₁La₃under 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, Al₁₂Mg₁₇ phase

中图分类号:

TF821

张福男，王兆文. MgCl₂-KCl-AlF₃-(La₂O₃)熔盐体系电解制备Al-Mg-La中间合金[J]. 东北大学学报:自然科学版, 2016, 37(7): 964-968.

JANG Pok-nam， WANG Zhao-wen. Electrolytic Preparation of Al-Mg-La Master Alloys from MgCl₂-KCl- AlF₃-(La₂O₃) Molten Salt[J]. Journal of Northeastern University Natural Science, 2016, 37(7): 964-968.

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

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

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