Non-contact measurements of the surface tension and viscosity of molybdenum using an electrostatic levitation furnace

The surface tension and viscosity of molybdenum have been determined by the oscillation drop technique in conjunction with a vacuum electrostatic levitation furnace. These properties are reported over wide temperature ranges, covering the liquid state above and below the melting temperature (Tm = 2896 K). Over the 2650–3000 K temperature range, the surface tension and the viscosity can respectively be expressed as σ(T) = 2.29 × 103 − 0.26(T − Tm) (mN m−1) and η(T) = 0.27exp[73 × 103/(RT)] (mPa s).