Egry I.,German Aerospace Center |
Ratke L.,German Aerospace Center |
Kolbe M.,German Aerospace Center |
Chatain D.,Center Interdisciplinaire Of Nanosciences Of Marseille Cinam |
And 4 more authors.
Journal of Materials Science | Year: 2010
Using electromagnetic levitation under microgravity conditions, the interfacial properties of an Cu75Co25 alloy have been investigated in the liquid phase. This alloy exhibits a metastable liquid miscibility gap and can be prepared and levitated in a configuration consisting of a liquid cobalt-rich core surrounded by a liquid copper-rich shell. Exciting drop oscillations and analysing the frequency spectrum, both surface and (liquid-liquid) interfacial tension can be derived from the observed oscillation frequencies. This paper briefly reviews the theoretical background and reports on a recent experiment carried out on board the TEXUS 44 sounding rocket. © 2009 Springer Science+Business Media, LLC.