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The viscosity of liquid metals and an empirical relationship between their activation energy of viscosity and their melting points

1961; Pergamon Press; Volume: 23; Issue: 3-4 Linguagem: Inglês

10.1016/0022-1902(61)80264-9

1878-1225

A. V. Grosse,

Chemical Thermodynamics and Molecular Structure

It is shown that a simple empirical relationship exists between the activation energy of viscosity for liquid metals and their melting points. This relationship coupled with Da Andrade's expression for the viscosity of the liquid metal at the melting point (Tm.p.): νm.p.(in poises)=5·7×10−4·(A.Tm.p.)V23A(A=At.wt.; VA=liq.at. volume at m.p;°K) permits us now to estimate the viscosity of any metal having a closepacked crystal structure, i.e., one for which the Andrade relationship holds, at any temperature. All available experimental data on the viscosity of metals were used to establish the empirical relationship shown in Fig. 2.