Electrical conductivity of Na3AlF6-AlF3-Al2O3-CaF2-LiF(NaCl) system electrolyte

被引：0

作者：

阚洪敏

王兆文

班允刚

石忠宁

邱竹贤

机构：

[1] China

[2] School of Materials and Metallurgy Northeastern University

[3] Shenyang 110004

来源：

TransactionsofNonferrousMetalsSocietyofChina | 2007年 / 01期

基金：

中国国家自然科学基金;

关键词：

electrical conductivity; aluminium electrolyte; additive; superheat; activation energy of conductance;

D O I：

暂无

中图分类号：

TG113 [金相学（金属的组织与性能）];

学科分类号：

080502 ;

摘要：

A PGSTAT 30 and a BOOSTER 20A were used to measure cell impedance.Electrical conductivity was gained by the Continuously Varying Cell Constant Technique.Electrical conductivity of KCl was measured for comparison.The results prove that the method is reliable and accurate.The electrical conductivity of Na3AlF6-AlF3-Al2O3-CaF2-LiF(NaCl)system was studied by this method.Activation energy of conductance was obtained based on the experiment results.The experiments show that electrical conductivity is increased greatly with NaCl and LiF added.Increasing 1%LiF(mass fraction)results in corresponding increase of 0.0276 S/cm for superheat condition of 15℃.For NaCl,it is 0.024 S/cm.Electrical conductivity is increased by 0.003 S/cm with 1℃temperature increase.The electrical conductivity is lower than that predicted by the WANG Model and higher than that predicted by the Choudhary Model.

引用

页码：181 / 186

页数：6

共 2 条

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[2]

Electrical conductivity of low melting baths for aluminium electrolysis: the system Na 3 AlF 6 -Li 3 AlF 6 - AlF 3 and the influence of additions of Al 2 O 3 , CaF 2 , and MgF 2[J] . P. Fellner,S. Midtlyng,A. Sterten,J. Thonstad.Journal of Applied Electrochemistry . 1993 (1)

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