应用化学 ›› 1989, Vol. 0 ›› Issue (5): 67-69.

• 研究简报 • 上一篇    下一篇

四电极法测量Na3AlF6-Al2O3-RE2O3熔体的电导率

赵敏寿, 冯力, 吕翔平, 唐定骧   

  1. 中国科学院长春应用化学研究所
  • 收稿日期:1988-04-28 修回日期:1989-03-11 出版日期:1989-10-10 发布日期:1989-10-10

MEASUREMENT OF SPECIFIC ELECTRICAL CONDUCTIVITY OF Na3AlF6-Al2O3-RE2O3 MELT BY FOUR ELECTRODE METHOD

Zhao Minshou, Feng Li, Lu Xiangping, Tang Dingxiang   

  1. Changchun Institute of Applied Chemistry, Academia Sinica
  • Received:1988-04-28 Revised:1989-03-11 Published:1989-10-10 Online:1989-10-10

摘要: 为了排除和减小电极与熔体接触面间的阻抗,电极与连接导线的电阻以及石英电导池腐蚀的影响,本文用交流四电极法[1]测量了熔体Na3AlF6-Al2O3-RE2O3的电导率,其中RE指以Ce为主的混合稀土。

关键词: 氟铝酸钠, 氧化铝, 稀土氧化物, 熔体, 四电极法, 电导率

Abstract: Four electrode method has beenused in measuring the specific electrical conductivityk of Na3AlF6-Al2O3-RE2O3 melt. It is found.that k is decreased with increasing thecontents of Al2O3 and RE2O3 in the melt and is increased with temperature. The apparentactiviation energy calculated is 18.84kJ/mol.The effect of the Al2O3 content on k is greaterthan that of the RE2O3 content.A mathematical model of the specific electrical conductivityof the melt is deduced with an accuracy of 95%.

Key words: Sodium fluroaluminate, Aluminium oxide, Rare earth oxide, Melt, Four electrode method, Conductivity