Non-contact thermophysical property measurements of liquid and supercooled platinum

Thermophysical properties of equilibrium and supercooled liquid platinum were measured using non-contact diagnostic techniques With an electrostatic levitator. Over the 169 1 to 22 16 K temperature range, the density can be expressed as p(T) 19.2 x 10(3) - 0.96(T-T-m) (kg(.)m(-3)) with T-m = 2041 K, yielding a volume expansion coefficient of 5.0 x 10(-5) K-1. In addition, the surface tension can be expressed as gamma(T) 1.80 x 10(3) - 0.14(T - T-m) (10(-3) N(.)m(-1)) and the viscosity as eta(T) =0.25exp[4.99 x 10(4)/(RT)] (10(-3) Pa(.)s) over the 1743 to 2313K temperature range.