Viscosity of Molten Rare Earth Metal Trichlorides II. Cerium Subgroup

Abstract

The kinematic viscosity of molten LaCl 3 , CeCl 3 , PrCl 3 , NdCl 3 , and SmCl 3 was measured directly by using a capillary viscometer made of quartz and a transparent electric furnace. Viscosity of molten PmCl 3 and EuCl 3 was estimated using common tendencies in the lanthanides row. The dynamic viscosity was computed by using the most reliable density data taken from literature. The viscosity of molten lanthanides trichlorides at the same temperature changes slightly within a cerium lanthanides subgroup. Molten EuCl 3 perhaps has abnormally low viscosity.