Surface Oscillation Phenomena of Aerodynamically Levitated Molten Al₂O₃

DOI:10.15011//jasma.34.340403
Int. J. Microgravity Sci. Appl. 2017p340403
Author
S. HAKAMADA, A. NAKAMURA, M. WATANABE and F. KARGL
Organization
Department of Physics, Gakushuin University, Institute of Materials Physics in Space, German Aerospace Center(DLR)
Abstract
We propose viscosity measurements of molten oxides using Aerodynamic Levitation (ADL) with CO2-laser heating which can achieve container-less and non-contact conditions for measurements. For viscosity measurements, we used a unique vibration method that causes oscillations in a sample and levitates a gas via acoustic speakers. Using these techniques, we clarified the surface oscillation excitation mechanism and then, based on this understanding, we measured the viscosity of molten Al2O3 and its temperature dependence.
Keyword(s)
Levitation, Thermophysical properties, Molten oxide, Surface oscillation
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Received 16 June 2017; Accepted 13 October 2017; Published 31 October 2017

© The Japan Society of Microgravity Applicaiton

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