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| Study on Reverse EMF of Aluminum Erbium Intermediate Alloy Prepared with Er2O3 as Erbium Source |
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Received:July 18, 2019
Revised:July 22, 2019
Accepted:July 23, 2019
Published Online:November 18, 2019
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| DOI：doi：10.3969/j.issn.1007-7545.2019.12.013 |
| KeyWord:Er2O3; aluminum erbium intermediate alloy; reverse EMF; current efficiency |
| Author | Institution |
| Kang Hongguang |
辽宁科技大学 |
| Li Jidong |
辽宁科技大学 |
| Zhang Chaogang |
辽宁科技大学 |
| Wang Qian |
辽宁科技大学 |
| Wang Yiyong |
辽宁科技大学 |
| Ning Zhe |
辽宁科技大学 |
| Lu Jinlin |
辽宁科技大学 |
| Li Jing |
辽宁科技大学 |
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| Abstract: |
| Reverse EMF of aluminum erbium intermediate alloy was investigated at 750 ℃, molten KF(25%)-LiF(20%)-ErF3(10%)-KCl(45%) system with Er2O3 as source of erbium. The results show that reverse EMF rises first and then stabilizes with increase of time under condition of 16 A/dm2. After adding Er2O3 (2%), anti-EMF drops 0.19 V on average, and the feeding period is 6 min. Current efficiency and erbium yield rise firstly and then drop with increase of current density. When electrolysis time is 24 min and current density is 12 A/dm2, erbium concentration in alloy reaches the maximum value of 3.65%, and current efficiency reaches the maximum value of 74.64%. Alloy is mainly composed of Al3Er and few of Al12Er, and the distribution is more uniform. |
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