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

作者：Xie Hongwei; Zhang He; Zhai Yuchun^*; Wang Jinxia; Li Chengde

来源：Journal of Materials Science & Technology, 2009, 25(4): 459-461.

• Aluminium
• Alumina
• Electrochemical deoxidation
• Low temperature

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 degrees C. 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).

• 出版日期2009-7
• 单位东北大学