Spontaneous Liquefaction of Solid Metal-Liquid Metal Interfaces in Colloidal Binary Alloys.

Autor: Parker CJ; School of Engineering, RMIT University, Melbourne, 3001, Australia., Zuraiqi K; School of Engineering, RMIT University, Melbourne, 3001, Australia., Krishnamurthi V; School of Engineering, RMIT University, Melbourne, 3001, Australia., Mayes EL; School of Science, RMIT University, Melbourne, 3001, Australia., Vaillant PHA; School of Engineering, RMIT University, Melbourne, 3001, Australia., Fatima SS; School of Engineering, RMIT University, Melbourne, 3001, Australia., Matuszek K; School of Chemistry, Monash University, Clayton, 3800, Australia., Tang J; School of Engineering, University of New South Wales (UNSW), Sydney, 2052, Australia., Kalantar-Zadeh K; School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, 2008, Australia., Meftahi N; ARC Centre of Excellence in Exciton Science, School of Science, RMIT University, Melbourne, 3001, Australia., McConville CF; Department of Physics, University of Warwick, Coventry, CV4 7AL, UK., Elbourne A; School of Science, RMIT University, Melbourne, 3001, Australia., Russo SP; School of Science, RMIT University, Melbourne, 3001, Australia.; ARC Centre of Excellence in Exciton Science, School of Science, RMIT University, Melbourne, 3001, Australia., Christofferson AJ; School of Science, RMIT University, Melbourne, 3001, Australia.; ARC Centre of Excellence in Exciton Science, School of Science, RMIT University, Melbourne, 3001, Australia., Chiang K; School of Engineering, RMIT University, Melbourne, 3001, Australia., Daeneke T; School of Engineering, RMIT University, Melbourne, 3001, Australia.
Jazyk: angličtina
Zdroj: Advanced science (Weinheim, Baden-Wurttemberg, Germany) [Adv Sci (Weinh)] 2024 Jul; Vol. 11 (26), pp. e2400147. Date of Electronic Publication: 2024 May 05.
DOI: 10.1002/advs.202400147
Abstrakt: Crystallization of alloys from a molten state is a fundamental process underpinning metallurgy. Here the direct imaging of an intermetallic precipitation reaction at equilibrium in a liquid-metal environment is demonstrated. It is shown that the outer layers of a solidified intermetallic are surprisingly unstable to the depths of several nanometers, fluctuating between a crystalline and a liquid state. This effect, referred to herein as crystal interface liquefaction, is observed at remarkably low temperatures and results in highly unstable crystal interfaces at temperatures exceeding 200 K below the bulk melting point of the solid. In general, any liquefaction process would occur at or close to the formal melting point of a solid, thus differentiating the observed liquefaction phenomenon from other processes such as surface pre-melting or conventional bulk melting. Crystal interface liquefaction is observed in a variety of binary alloy systems and as such, the findings may impact the understanding of crystallization and solidification processes in metallic systems and alloys more generally.
(© 2024 The Authors. Advanced Science published by Wiley‐VCH GmbH.)
Databáze: MEDLINE
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