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Effects of Electrolytic Parameters on the Preparation of Al–Sc Master Alloy in Na3AlF6-K3AlF6-AlF3 Melt

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10th International Symposium on High-Temperature Metallurgical Processing

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

Abstract

The effects of electrolytic parameters on the content of Sc in Al–Sc master alloy prepared by electrolysis in Na3AlF6-K3AlF6-AlF3 melt were studied. It is observed that the content of Sc in Al–Sc master alloy increases and then decreases with increasing the electrolysis temperature and the cathodic current density. Under the electrolysis condition (temperature 950 °C, cathodic current density 1.50 A cm−2 and concentration of Al2O3 1.0 wt%), the content of Sc in the production is increased from 0.81 to 3.87 wt% as the value of the concentration ratio of Sc2O3 to Al2O3 ([Sc2O3]/[Al2O3]) increased from 2 to 6. The analysis of SEM indicates that the production of Al–Sc master alloy is composed of the aluminum and the Al3Sc. The distribution of Sc in Al–Sc master alloy is uniform.

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Acknowledgements

The authors gratefully acknowledge the financial support from the State Natural Science Fund (No. 51674301).

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Authors and Affiliations

  1. School of Metallurgy and Environment, Central South University, 932 Lushan South Road, Changsha, 410083, Hunan, China

    Kai Yang, Zhongliang Tian, Xun Hu, Yanqing Lai & Jie Li

Authors
  1. Kai Yang
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  2. Zhongliang Tian
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  3. Xun Hu
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  4. Yanqing Lai
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  5. Jie Li
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Corresponding author

Correspondence to Zhongliang Tian .

Editor information

Editors and Affiliations

  1. Central South University, Changsha, China

    Tao Jiang

  2. Michigan Technological University, Houghton, MI, USA

    Jiann-Yang Hwang

  3. RHI Magnesita, Leoben, Austria

    Dean Gregurek

  4. Central South University, Changsha, China

    Zhiwei Peng

  5. Montana Tech, Butte, MT, USA

    Jerome P. Downey

  6. The University of Queensland, Brisbane, QLD, Australia

    Baojun Zhao

  7. Istanbul Technical University, Istanbul, Turkey

    Onuralp Yücel

  8. Atilim University, Ankara, Turkey

    Ender Keskinkilic

  9. University of Concepción, Concepción, Chile

    Rafael Padilla

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© 2019 The Minerals, Metals & Materials Society

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Yang, K., Tian, Z., Hu, X., Lai, Y., Li, J. (2019). Effects of Electrolytic Parameters on the Preparation of Al–Sc Master Alloy in Na3AlF6-K3AlF6-AlF3 Melt. In: Jiang, T., et al. 10th International Symposium on High-Temperature Metallurgical Processing. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-05955-2_30

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