The study of surface tension and viscosity on mixed molten salt of KNO_3-NaNO_2

The surface tension and viscosity of mixed molten salt KNO3-NaNO2were studied in the temperature range from190-250 ℃.The method of curve fitting was used for analyzing the results.The study shows that the surface tension of mixed molten salt KNO3-NaNO2was linearly correlative to the temperature.The viscosity was non-linearly correlative to the temperature.As the temperature rises,the surface tension and viscosity were both decreased.As the mass ratio of KNO3 rises,the surface tension was decreased while the viscosity was increased.