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Nucleation study for an undercooled melt of intermetallic NiZr

Kobold, Raphael and Kolbe, Matthias and Hornfeck, W. and Herlach, D.M. (2018) Nucleation study for an undercooled melt of intermetallic NiZr. Journal of Chemical Physics. American Institute of Physics (AIP). doi: 10.1063/1.5018135. ISSN 0021-9606.

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Official URL: https://aip.scitation.org/doi/abs/10.1063/1.5018135


Electrostatic levitation is applied in order to undercool liquid glass forming NiZr significantly below its melting temperature. For NiZr large undercoolings are found to be highly reproducible with this experimental method. One single NiZr sample of high purity is undercooled 200 consecutive times which leads to a distribution function of undercooling temperatures. Within a statistical approach of classical nucleation theory, the undercooling distribution is analyzed yielding parameters, e.g., a pre-exponential factor. This result is consistent with the crystallization behavior of NiZr at high undercooling and with the corresponding microstructural analysis. Since NiZr is a representative of the very common CrB structure type, with 132 isostructural phases existing, understanding its nucleation behavior adds important knowledge to the nucleation of binary alloys in general.

Item URL in elib:https://elib.dlr.de/119423/
Document Type:Article
Title:Nucleation study for an undercooled melt of intermetallic NiZr
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Kobold, Raphaelraphael.kobold (at) dlr.deUNSPECIFIED
Kolbe, Matthiasmatthias.kolbe (at) dlr.deUNSPECIFIED
Hornfeck, W.hornfeck (at) fzu.czUNSPECIFIED
Herlach, D.M.dieter.herlach (at) dlr.deUNSPECIFIED
Date:March 2018
Journal or Publication Title:Journal of Chemical Physics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1063/1.5018135
Publisher:American Institute of Physics (AIP)
Keywords:Nucleation, Statistics, NiZr, Levitation, Solidification, intermetallic, binary alloy
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Research under Space Conditions
DLR - Research theme (Project):R - Materials Research and Microgravity (MuM)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space > Scientific Experiments MP
Deposited By: Kobold, Raphael
Deposited On:26 Mar 2018 13:45
Last Modified:26 Mar 2018 13:45

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