STUDY OF THE SCALING LAW FOR VISCOSITY COEFFICIENTS IN SIMPLE MELTS
简单熔体粘滞系数的普适性标度关系

Employing a realistic many-body potentials for a series of simple melts, including Ag, Al, Au, Co, Cu, Mg, Ni, Pb, Pd, Pt, Rh and Si, and using the molecular-dynamics simulation the scaling laws of viscosity with different expressions of the reduction parameters were studied. The simulated results support the universal scaling laws proposed by Rosenfeld for transport coefficients in liquid metals. Following Dzugutov's method, a universal scaling relationship between the viscosity coefficient and excess entropy was obtained. In particular, it is found that there exists a link between the scaling law and the Arrhenius law, i.e., the excess entropy scaling law for the viscosity coefficient can be interpreted as a straightforward extension of the Arrhenius law.