Gang XIE Shanghai Institute of Metallurgy
,
Academia Sinica
,
Shanghai
,
200050
,
ChinaShiyin SHEN Northeast University of Technology
,
Shenyang
,
110006
,
China
材料科学技术（英）
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.
关键词:
activity
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