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Abstract
Bulk metallic glasses are of critical interest for a wide range of applications, including their use in spacecraft gearboxes and mechanisms due to their excellent low-temperature, unlubricated wear resistance. Also of interest, is the potential for in-space manufacturing of metal alloys and the use of microgravity to determine fundamental thermophysical properties to inform ground-based modeling and experimentation. In this work, a Zr-based bulk metallic glass was processed in the electromagnetic levitator ISS-EML to determine undercooling, electrical resistivity, specific heat capacity, surface tension, and viscosity. A 6.5 mm sphere was vitrified during the processing, resulting in the first bulk metallic glass manufactured on board the international space station (ISS).
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1 Institute of Functional Nanosystems, Ulm University, Albert-Einstein-Allee 47, Ulm, Germany
2 Materials Development and Manufacturing Technology Group, NASA Jet Propulsion Laboratory /California Institute of Technology, Pasadena, CA, USA