0603371 - FZÚ 2025 RIV GB eng C - Konferenční příspěvek (zahraniční konf.)
Kožíšek, Zdeněk - Král, Robert - Zemenová, Petra
Heterogeneous nucleation in an aluminum droplet at low supercooling.
Journal of Physics: Conference Series. Vol. 2931. Bristol: IOP Publishing, 2024, č. článku 012017. ISSN 1742-6588.
[DMSRE seminar: Development of Materials Science in Research and Education (DMSRE) /33./. Tatranská Štrba (SK), 09.09.2024-13.09.2024]
Grant CEP: GA MŠMT(CZ) EH22_008/0004596
Institucionální podpora: RVO:68378271
Klíčová slova: crystallization * thermal analysis * nucleation * Aluminum
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Web výsledku:
https://iopscience.iop.org/article/10.1088/1742-6596/2931/1/012017/pdf
DOI: https://doi.org/10.1088/1742-6596/2931/1/012017

The crystallization of the aluminum (Al) sample was detected by the differential scanning calorimetry (DSC) at the undercooling ∆T C ≈ 18.3 ◦ C. At the undercooling ∆T = 6.8 ◦ C < ∆T C , the crystallization event was detected after a time delay of several minutes. The nucleation kinetics on an inner droplet surface is analyzed by numerically solving of the nucleation equations to determine the number of nuclei formed in the Al droplet sample of the mass m 0 = 9.91 mg at ∆T = 6.8 ◦ C. The depletion of the Al melt due to the formation of crystal nuclei is taken into account. The nucleation rate for different cluster sizes tends to a quasi-stationary limit which is lower than predicted by the classical nucleation model. Homogeneous nuclei in the droplet volume are formed earlier than heterogeneous ones, but at longer times (several minutes) the heterogeneous nucleation prevails.
Trvalý link: https://hdl.handle.net/11104/0360629


 
Vědecká data v ASEP:
Dataset for Heterogeneous nucleation in an aluminum droplet at low supercooling