摘要
Electrical conductivity of NaF-AlF3 melts was measured by continuously varying cell constant(CVCC) technique. Relationships between equivalent conductivity at 990-1 030 ℃ and temperature and composition, and relationship between equivalent conductivity activation energy and composition of the melts were then studied on the basis of two-step decomposition mechanism of AlF63-. According to the changes of molar fractions of different anions in NaF-AlF3 melts, courses of dependence of equivalent conductivity and its activation energy on composition were analyzed. The results show that the influence of temperature on equivalent conductivity of the melts is small in the researched temperature range, and equivalent conductivity increases with increasing the molar fraction of AlF3; there is a minimum point in the activation energy—composition curve when molar fraction of AlF3 is 0.29.
Electrical conductivity of NaF-AlF3 melts was measured by continuously varying cell constant（CVCC） technique. Relationships between equivalent conductivity at 990-1 030 ℃ and temperature and composition, and relationship between equivalent conductivity activation energy and composition of the melts were then studied on the basis of two-step decomposition mechanism of AlF6^3-. According to the changes of molar fractions of different anions in NaF-AlF3 melts, courses of dependence of equivalent conductivity and its activation energy on composition were analyzed. The results show that the influence of temperature on equivalent conductivity of the melts is small in the researched temperature range, and equivalent conductivity increases with increasing the molar fraction of AlF3; there is a minimum point in the activation energy--composition curve when molar fraction of AlF3 is 0.29.
出处
《中国有色金属学会会刊：英文版》
EI
CSCD
2009年第3期719-723,共5页
Transactions of Nonferrous Metals Society of China
基金
Project(50334030) supported by the National Natural Science Foundation of China
Project(2007CB210305) supported by National Basic Research Program of China
关键词
导电活化能
ALF3
电导率
氟化钠
融化
等效
摩尔分数
温度范围
equivalent conductivity
equivalent conductivity activation energy
continuously varying cell constant technique
NaF-AIF3 melts
