Nucleation study for an undercooled melt of intermetallic NiZr

0510514 - FZÚ 2020 RIV US eng J - Journal Article
Kobold, R. - Kolbe, M. - Hornfeck, Wolfgang - Herlach, D.
Nucleation study for an undercooled melt of intermetallic NiZr.
Journal of Chemical Physics. Roč. 148, č. 11 (2018), s. 1-6, č. článku 114502. ISSN 0021-9606. E-ISSN 1089-7690
Institutional support: RVO:68378271
Keywords : liquide glass * electrostatic levitation * microstructural analysis * homogeneous nucleation
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 2.997, year: 2018
Method of publishing: Limited access
https://doi.org/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, which indicates homogeneous nucleation. 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.
Permanent Link: http://hdl.handle.net/11104/0300977