Surface tension and viscosity of liquid Pd43Cu27Ni10P20 measured in a levitation device under microgravity

Here we present measurements of surface tension and viscosity of the bulk glass-forming alloy Pd43Cu27Ni10P20 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 Pd43Cu27Ni10P20 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.


Published in:
Npj Microgravity, 5, 4
Year:
Feb 25 2019
Publisher:
London, SPRINGERNATURE
ISSN:
2373-8065
Keywords:
Laboratories:




 Record created 2019-06-18, last modified 2019-06-25


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