caa a22 4500 465755712 CHVBK 20180323111846.0 cr unu---uuuuu 170327e19900701xx s 000 0 eng 10.1007/BF01184336 doi (NATIONALLICENCE)springer-10.1007/BF01184336 A dynamic technique for measuring surface tension at high temperatures in a microgravity environment [Elektronische Daten] [A. Miiller, A. Cezairliyan] The feasibility of a dynamic technique for measuring surface tension of liquid metals at high temperatures in a microgravity environment is considered. The basic method involves heating a tubular specimen resistively from ambient temperature through its melting point in about l s by passing an electrical current pulse through it, while simultaneously recording the pertinent experimental quantities. Static equilibrium for the molten specimen may be achieved (at least for a short time) in a microgravity environment by splitting the current after it passes through the specimen tube and returning a fraction along the tube axis and the remaining fraction outside the specimen. Adjustments to the current split enable a balance between the magnetic and surface tension forces acting on the specimen. Values for surface tension are determined from measurements of the equilibrium dimensions of the molten specimen tube, and the magnitudes of the currents. Preliminary rapid melting experiments, performed during microgravity simulations with NASA's KC-135 aircraft, yield a value for the surface tension of copper at its melting point which is in reasonable agreement with literature data. Plenum Publishing Corporation, 1990 copper nationallicence dynamic technique nationallicence high temperature nationallicence liquid metals nationallicence melting point nationallicence microgravity nationallicence surface tension nationallicence Miiller A. Thermophysics Division, National Institute of Standards and Technology, 20899, Gaithersburg, Maryland, USA aut Cezairliyan A. Thermophysics Division, National Institute of Standards and Technology, 20899, Gaithersburg, Maryland, USA aut International Journal of Thermophysics Kluwer Academic Publishers-Plenum Publishers 11/4(1990-07-01), 663-674 0195-928X 11:4<663 1990 11 10765 https://doi.org/10.1007/BF01184336 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01184336 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Miiller A. Thermophysics Division, National Institute of Standards and Technology, 20899, Gaithersburg, Maryland, USA aut NATIONALLICENCE 700 1- Cezairliyan A. Thermophysics Division, National Institute of Standards and Technology, 20899, Gaithersburg, Maryland, USA aut NATIONALLICENCE 773 0- International Journal of Thermophysics Kluwer Academic Publishers-Plenum Publishers 11/4(1990-07-01), 663-674 0195-928X 11:4<663 1990 11 10765 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer