Electrochemical Reduction of Silicon Oxide and Codeposition of Al-Si Alloy from Cryolite Molten Salt

被引:0
|
作者
Jiaxin Yang
Wenju Tao
Liyu Chen
Jingui He
Yifan Zhang
Jiangyu Yu
Zhaowen Wang
机构
[1] Northeastern University,Key Laboratory for Ecological Metallurgy of Multi
[2] Northeastern University,metallic Mineral (Ministry of Education), School of Metallurgy
[3] Shenyang Li-gong University,School of metallurgy
来源
JOM | 2021年 / 73卷
关键词
D O I
暂无
中图分类号
学科分类号
摘要
The preparation of high-purity and high-value alloys is of great significance to industrial production. The purpose of this study is to explore the process of producing aluminum-silicon (Al-Si) alloy by the electrochemical Al-Si eutectoid method. The electrochemical behavior of aluminum and silicon on tungsten electrode was studied by cyclic voltammetry and galvanostatic chronopotentiometry. The effect of SiO2 addition on the eutectoid behavior of Al and Si was studied. The results show that the precipitation potential of Al is about –1.35 V (versus Pt), and the initial precipitation potential of Si is about –0.8 V (versus Pt). The precipitation process of silicon includes two reduction stages. In addition, the precipitation of Si is a quasireversible reaction controlled by diffusion process. Finally, Al-Si alloy was obtained by potentiostatic electrodeposition at –1.8 V potential, indicating that Al and Si would codeposit at this potential.
引用
收藏
页码:3727 / 3733
页数:6
相关论文
共 50 条
  • [1] Electrochemical Reduction of Silicon Oxide and Codeposition of Al-Si Alloy from Cryolite Molten Salt
    Yang, Jiaxin
    Tao, Wenju
    Chen, Liyu
    He, Jingui
    Zhang, Yifan
    Yu, Jiangyu
    Wang, Zhaowen
    JOM, 2021, 73 (12) : 3727 - 3733
  • [2] Preparation of Al-Si Master Alloy by Electrochemical Reduction of Volcanic Rock in Cryolite Molten Salt
    Liu, Aimin
    Shi, Zhongning
    Xu, Junli
    Hu, Xianwei
    Gao, Bingliang
    Wang, Zhaowen
    JOM, 2016, 68 (06) : 1518 - 1524
  • [3] Preparation of Al-Si Master Alloy by Electrochemical Reduction of Volcanic Rock in Cryolite Molten Salt
    Aimin Liu
    Zhongning Shi
    Junli Xu
    Xianwei Hu
    Bingliang Gao
    Zhaowen Wang
    JOM, 2016, 68 : 1518 - 1524
  • [4] Production of Al-Si master alloy by aluminothermic reduction of silica in molten cryolite
    Gorji, Y. M.
    Soltanieh, M.
    Habibolahzadeh, A.
    CANADIAN METALLURGICAL QUARTERLY, 2007, 46 (04) : 385 - 390
  • [5] Preparation of Al-Si Master Alloy by Electrochemical Reduction of Fly Ash in Molten Salt
    Aimin Liu
    Liangxing Li
    Junli Xu
    Zhongning Shi
    Xianwei Hu
    Bingliang Gao
    Zhaowen Wang
    Jiangyu Yu
    Gong Chen
    JOM, 2014, 66 : 694 - 699
  • [6] Preparation of Al-Si Master Alloy by Electrochemical Reduction of Fly Ash in Molten Salt
    Liu, Aimin
    Li, Liangxing
    Xu, Junli
    Shi, Zhongning
    Hu, Xianwei
    Gao, Bingliang
    Wang, Zhaowen
    Yu, Jiangyu
    Chen, Gong
    JOM, 2014, 66 (05) : 694 - 699
  • [7] Electrochemical Reduction of Zirconium Oxide and Co-Deposition of Al-Zr Alloy from Cryolite Molten Salt
    Li, Min
    Li, Ying
    Wang, Zhaowen
    JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2019, 166 (02) : D65 - D68
  • [8] Preparation of Al-Si alloy by molten salt electrolysis
    Yu, Xu-Guang
    Qiu, Zhu-Xian
    Dongbei Daxue Xuebao/Journal of Northeastern University, 2004, 25 (05): : 442 - 444
  • [9] Study on the mechanism of Al-Si alloy preparation via aluminothermic reduction-molten salt electrolysis in KF-AlF3 molten salt
    Guan, Jinzhao
    Xie, Kaiyu
    Liu, Aimin
    Shi, Zhongning
    Chen, Gong
    Boca, Miroslav
    MATERIALS TODAY COMMUNICATIONS, 2021, 29
  • [10] Electrochemical mechanism of electrolysis codeposition of Mg-Sr alloy in molten salt
    Sun, Xiu-yun
    Lu, Gui-min
    Fan, Shu-di
    TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2014, 24 (05) : 1629 - 1634