Aerodynamic Levitation: Thermophysical Property Measurements of Liquid Oxides

DOI:10.15011/ijmsa.32.320212
Int. J. Microgravity Sci. Appl. 2015p320212
Author
F. KARGL, C. YUAN and G.N. GREAVES
Organization
Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft- und Raumfahrt (DLR), Also at: Foundry Institute, RWTH Aachen University, Institute of Mathematics and Physics, Aberystwyth University, Also at: Department of Materials Science and Metallurgy, University of Cambridge
Abstract
We report on a compact laser-heated aerodynamic levitation facility which can be used for studies of thermophysical properties like density, surface tension and viscosity of liquid oxides at high temperatures. The facility is characterized by employing an acoustic excitation system for controlled excitation of droplet oscillations which is key for measurements of surface tension and viscosity. Results of measurements of density and viscosity of pure liquid Al2O3 as well as CaAl2O4 are presented. The data are discussed in the context of available literature data. It is shown that with the present setup the experimentally accessible temperature ranges could be enlarged. For viscosity high precision data for high melting point and highly reactive oxide melts can now be obtained using aerodynamic levitation.
Keyword(s)
Aerodynamic levitation, Thermophysical properties, Oxide melts
PDF
Download

Received 22 Jan. 2015, accepted 3 Mar. 2015, published 31 Apr. 2015

© The Japan Society of Microgravity Applicaiton

この投稿文は次の言語で読めます: Japanese

ページ先頭に戻る