Al Preparation from Solid Al2O3 by Direct Electrochemical Deoxidation in Molten CaCl2-NaCl at 550℃

材料科学技术（英文）, 2009, 25(4): 459-461.

^1, , ^2, , ^3, , ^4, , ^5,

1.School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China

2.School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China

3.School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China

4.School of Science, Northeastern University, Shenyang 110004, China

5.School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China

基金项目: the Postgraduate Foundation of Northeastern University in China(18702016) 国家自然科学基金(50674026) the Innovational Experiment Plan ofgraduate Student of China(071014506)

Al Preparation from Solid Al2O3 by Direct Electrochemical Deoxidation in Molten CaCl2-NaCl at 550℃

Hongwei Xie ^1, , He Zhang ^2, , Yuchun Zhai ^3, , Jinxia Wang ^4, , Chengde Li ^5,

1.School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China

2.School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China

3.School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China

4.School of Science, Northeastern University, Shenyang 110004, China

5.School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China

Keywords： Aluminium

Al was prepared by a new method in molten salt at low temperature. Sintered alumina pellets were used as cathode; graphite rod was employed as anode; and the molten CaCl2-NaCl was the electrolyte. A constant 3.2 V voltage was applied in this experiment, and oxygen in solid alumina cathode was reduced by direct electrochemical deoxidation at 550℃. In this process, the current gradually decreased with increasing time and the alumina pellets became grey and porous. The metallic particles were obtained and characterized by XRD (X-ray diffraction) and SEM (scanning electron microscopy).

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