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Surface tension and viscosity of liquid Pd_(43)Cu_(27)Ni_(10)P_(20) measured in a levitation device under microgravity

Mohr, Markus and Wunderlich, Rainer K. and Zweiacker, Kai and Prades-Rödel, Silke and Sauget, Romuald and Blatter, Andreas and Logé, Roland and Dommann, Alex and Neels, Antonia and Johnson, William L. and Fecht, Hans-Jörg (2019) Surface tension and viscosity of liquid Pd_(43)Cu_(27)Ni_(10)P_(20) measured in a levitation device under microgravity. npj Microgravity, 5 . Art. No. 4. ISSN 2373-8065.

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Here we present measurements of surface tension and viscosity of the bulk glass-forming alloy Pd_(43)Cu_(27)Ni_(10)P_(20) performed during containerless processing under reduced gravity. We applied the oscillating drop method in an electromagnetic levitation facility on board of parabolic flights. The measured viscosity exhibits a pronounced temperature dependence following an Arrhenius law over a temperature range from 1100 K to 1450 K. Together with literature values of viscosity at lower temperatures, the viscosity of Pd_(43)Cu_(27)Ni_(10)P_(20) can be well described by a free volume model. X-ray diffraction analysis on the material retrieved after the parabolic flights confirm the glassy nature after vitrification of the bulk samples and thus the absence of crystallization during processing over a wide temperature range.

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Alternate Title:Surface tension and viscosity of liquid Pd43Cu27Ni10P20 measured in a levitation device under microgravity
Additional Information:© The Author(s) 2019. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit Received: 6 December 2018. Accepted: 5 February 2019. Published online: 25 February 2019. The continued support by the German Space Agency DLR under contract 50WM1759 is gratefully acknowledged. This work was also supported by the European Space Agency ESA under contract AO-2009-1020. The support from the Institute of Materials Physics in Space of the DLR, Cologne in conducting the experiments during the parabolic flight campaigns and its support in experiment preparation is gratefully acknowledged. Author Contributions: H.-J.F., W.L.J., A.D., A.N., and R.L. proposed the experiments and coordinated the project. S.P.-R., R.S., and A.B. prepared the investigated material. R.K.W. planned the procedures for the parabolic flights, K.Z. performed the X-ray measurements. R.K.W., M.M., A.N., and K.Z. analyzed the experiment data. R.K.W. and M.M. prepared the manuscript with contributions from all authors. All authors read, edited, and approved the final manuscript. Data availability: The datasets generated during and analyzed during the current study are available from the corresponding author on reasonable request. Reporting summary: Further information on experimental design is available in the Nature Research Reporting Summary linked to this article. The authors declare no competing interests.
Funding AgencyGrant Number
European Space Agency (ESA)AO-2009-1020
Deutsches Zentrum für Luft- und Raumfahrt (DLR)50WM1759
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:94266
Deposited By: George Porter
Deposited On:29 Mar 2019 19:42
Last Modified:03 Oct 2019 21:02

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