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Temperature and oxygen adsorption coupling effects upon the surface tension of liquid metals

Aïmen E. Gheribi and Patrice Chartrand

Article (2019)

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Cite this document: Gheribi, A. E. & Chartrand, P. (2019). Temperature and oxygen adsorption coupling effects upon the surface tension of liquid metals. Scientific Reports, 9. doi:10.1038/s41598-019-43500-3
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Abstract

An accurate knowledge of the surface tension of liquid metals is critical for many theoretical and practical applications, especially in the current context of emerging growth of nanotechnology. The surface tension and its temperature dependence are drastically influenced by the level of impurities in the metal such as oxygen, sulphur or carbon. For this reason, experimental surface tension data of metals reported in literature are scattered. Strictly speaking, when referring to the surface tension of liquid metals, both variables temperature and oxygen content must be specified. There exists no clear formalism describing the coupling effect temperature and the oxygen content upon the surface tension of liquid metals. The aim of this work is to fill this gap. A thermodynamically self-consistent formulation for the surface tension of liquid metals and semiconductors as a function of temperature and oxygen content is established. According to the proposed formalism, a reliable expression for the surface tension of pure and oxygen saturated metals is then derived. The proposed model is found to be in good agreement with available experimental data, showing a good predictive capability. Aluminium is chosen and thoroughly evaluated as a case study, due to its very high sensitivity to oxygen level. Its surface tension is explicitly formulated as a function of temperature and oxygen content.

Open Access document in PolyPublie
Subjects: 1800 Génie chimique > 1803 Thermodynamique
2000 Science et technologie des matériaux > 2003 Métallurgie, métaux et alliages
Department: Département de génie chimique
Research Center: CRCT - Centre de recherche en calcul thermochimique
Funders: CRSNG/NSERC, Rio Tinto Aluminium
Date Deposited: 05 Apr 2022 14:43
Last Modified: 05 Jul 2022 13:03
PolyPublie URL: https://publications.polymtl.ca/4888/
Document issued by the official publisher
Journal Title: Scientific Reports (vol. 9)
Publisher: Nature
Official URL: https://doi.org/10.1038/s41598-019-43500-3

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