The viscosity of liquid Bi - Ga alloys

Abstract

The shear viscosity of Bi - Ga melts in the entire concentration range was measured using an oscillating-cup viscometer. The viscosity data well above the temperature of phase separation can be represented by an empirical equation of the Arrhenius type. The activation energies of viscous flow are given. In the vicinity of the critical point the viscosity increases as the temperature decreases. This behaviour is analysed in terms of various models. The critical exponent y is found to be .