Surface Tension and Viscosity of the Ni‐based Superalloy CMSX‐4 Measured by the Oscillating Drop Method in Parabolic Flight Experiments

Abstract

The surface tension and the viscosity of the Ni-based superalloy CMSX-4 were measured by the oscillating drop method on electromagnetically levitated specimen under reduced gravity conditions on a parabolic flight. The twenty seconds of reduced gravity available in a single parabola proved sufficient for melting, heating into the stable liquid and free cooling to solidification.