Viscosity and density of Fe S liquids at high pressures

Abstract

High P, T measurements of viscosity and density of Fe–S liquids are reported. Viscosity was measured using Stokes method and synchrotron radiographic techniques for real-time imaging of a falling/rising composite sphere in Fe–S liquids. For P up to 4 GPa and T up to 1523 K, measured viscosities are of the order of 10−2–10−3 Pa s. Density of Fe–10 wt% S liquids was measured using the sink/float method with composite spheres. The high P density data indicate a density increase of 29% between 1 atm and 15 GPa at 1923 K.