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doi:10.22028/D291-39649
Title: | Impact of Sulfur on the melt dynamics of glass forming Ti75Ni25−xSx |
Author(s): | Wilden, J. Yang, F. Holland-Moritz, D. Szabó, S. Lohstroh, W. Bochtler, B. Busch, R. Meyer, A. |
Language: | English |
Title: | Applied Physics Letters |
Volume: | 117 |
Issue: | 1 |
Publisher/Platform: | AIP Publishing |
Year of Publication: | 2020 |
Free key words: | Glass dynamics Liquid metals Neutron scattering Diffusion Sulfur |
DDC notations: | 500 Science |
Publikation type: | Journal Article |
Abstract: | Substitution of Nickel by Sulfur leads to bulk metallic glass formation in eutectic Ti75Ni25. In order to understand the improved glass forming ability, a detailed analysis of the melt dynamics was performed. We measured the density, the viscosity, and the self-diffusion of Ti75Ni25−xSx (x = 0, 5, 8) melts as a function of temperature. Moreover, the viscosity was measured under reduced gravity conditions to benchmark ground-based data. The self-diffusion coefficients were probed by incoherent, quasi-elastic neutron scattering. All measurements were combined with electrostatic or electromagnetic levitation, in order to process these highly reactive Titanium-based melts. From the measured density, the packing fraction was calculated as a function of temperature. In contrast to other bulk metallic glasses, the decrease in melt dynamics comes along with the decrease in packing density. |
DOI of the first publication: | 10.1063/5.0012409 |
URL of the first publication: | https://aip.scitation.org/doi/10.1063/5.0012409 |
Link to this record: | urn:nbn:de:bsz:291--ds-396499 hdl:20.500.11880/35726 http://dx.doi.org/10.22028/D291-39649 |
ISSN: | 1077-3118 0003-6951 |
Date of registration: | 3-May-2023 |
Faculty: | NT - Naturwissenschaftlich- Technische Fakultät |
Department: | NT - Materialwissenschaft und Werkstofftechnik |
Professorship: | NT - Prof. Dr. Ralf Busch |
Collections: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
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