A Re-assessment of the Thermodynamic Properties of Osmium

The thermodynamic properties were reviewed by the author in 1995. A new assessment of the enthalpy of fusion at 68.0 ± 1.7 kJ mol-1 leads to a revision of the thermodynamic properties of the liquid phase and although the enthalpy of sublimation at 298.15 K is retained as 788 ± 4 kJ mol-1 the normal boiling point is revised to 5565 K at one atmosphere pressure.

Interpretation of pulse-heating experiments for rhenium by quantum molecular dynamics

We present quantum molecular dynamics calculations of thermophysical properties of solid and liquid rhenium in the vicinity of melting. We show that some pulse-heating experiments for rhenium can be independently described by the first-principle calculations. Our calculations predict significant volume change of about 6% at melting. We also provide our estimation of the enthalpy of fusion, which is about 33.6 kJ/mol.