Experimental Studies of Liquid Viscosity in Immiscible Al-In Alloys

The liquid viscosity of immiscible Al-In alloys was measured using an oscillating-cup viscometer. It has been found that the viscosity of Al-In melts changes abruptly at the critical temperature of liquid-liquid phase separation during the cooling process. The experimental data above the temperature of phase separation are fitted to the Arrhenius equation. The fitted results show that the temperature dependence of the viscosity obeys the Arrhenius relationship.