Sodium Activity in Molten Aluminum Measured with a Solid Electrolyte

材料科学技术（英文）, 1993, 9(5): 388-390.

Sodium Activity in Molten Aluminum Measured with a Solid Electrolyte

Gang XIE Shanghai Institute of Metallurgy , Academia Sinica , Shanghai , 200050 , ChinaShiyin SHEN Northeast University of Technology , Shenyang , 110006 , China

Keywords： activity , null , null

The sodium activities in aluminium in equilibrium with cryolite-alumina melt and during electrolysis were determined by EMF with Naβ-Al_2O_3 solid electrolyte.With this sodium activities,we calculate the activities of NaF and AIF_3 in the cryolite-alumina melt.The potential difference of discharge be- tween sodium ions and aluminum ions at cathode of Hall-Heroult cell was also obtained from the sodium activity in aluminum.

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Sodium Activity in Molten Aluminum Measured with a Solid Electrolyte

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