The Viscosity of the Fused Salts Mixtures : KCl-LiCl and KCl-NaCl Systems

Abstract

Isotherms of viscosity against molar compositions have been investigated over extended temperature ranges for the systems KCl-LiCl and KCl-NaCl and the activation energy for viscous flow are calculated with Eyring's theory. The activation energy showed negative deviation from additivity in KCl-LiCl system, but in KCl-NaCl system the activation energy showed positive deviation from additivity in the range of 0〜40 mol % NaCl and showed negative deviation in the range of 40〜100 mol % NaCl. These deviations are caused by the interaction between different types of molecules or ion pairs in the liquid mixture.