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| Effect of Electromagnetic Field on Preparation of Al-Mg Master Alloy by Rotating Liquid Aluminium Cathode Method |
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Received:April 14, 2014
Revised:April 17, 2014
Accepted:April 18, 2014
Published Online:September 19, 2014
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| DOI：10.3969/j.issn.1007-7545.2014.10.015 |
| KeyWord:Al-Mg alloy; Rotating Liquid Aluminium Cathode; back electrodynamic potential; current efficiency |
| Author | Institution |
| WANG Yi-yong |
辽宁科技大学 辽宁省化学冶金工程重点实验室 鞍山 |
| JIN Hu |
辽宁科技大学 辽宁省化学冶金工程重点实验室 鞍山 |
| LI Ji-dong |
辽宁科技大学 辽宁省化学冶金工程重点实验室 鞍山 |
| ZHANG Jun-wei |
辽宁科技大学 激光先进制造技术研发中心 鞍山 |
| Su Jian-ming |
辽宁科技大学 激光先进制造技术研发中心 鞍山 |
| Han Chu-fei |
辽宁科技大学 辽宁省化学冶金工程重点实验室 鞍山 |
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| Abstract: |
| Al-Mg master alloy was prepared by Rotating Liquid Aluminium Cathode Method in Na3PO3-MgF2 molten salt system with MgO as raw material. The technological parameters such as back electrodynamic potential, current intensity, and magnetic field intensity were measured by testing device of molten salt electrolysis and Teslameter. The microstructure of alloy was analyzed by SEM and XRD. The change rules of back electrodynamic potential, current efficiency and magnesium concentration in alloy during preparation were discussed. The results show that alloying of Rotating Liquid Aluminium Cathode can effectively reduce back electrodynamic potential and increase current efficiency and magnesium concentration in alloy. The Al-Mg alloy with Mg 24.5% can be obtained by electrolyzing for 3 h at current intensity of 5 A and 950 ℃ with current efficiency of 83%. The alloy has dense crystal structure and homogeneous distribution of elements with phase of Al12Mg17. |
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