About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Thermodynamics and Kinetics of Alloys
|
Presentation Title |
Interfacial and Volumetric Melting Regimes of Sn Nanoparticles |
Author(s) |
Lucas Robinson, John Blendell, Carol Handwerker, Edwin Garcia |
On-Site Speaker (Planned) |
Edwin Garcia |
Abstract Scope |
A thermodynamically consistent phase field formulation was developed to describe what has been historically known as the premelted surface layer in Sn nanoparticles. The derived formulation enables to identify interfacial phases, and the identification of four regimes of behavior: a) the classic premelting regime, in which the surface of the particle forms a liquid shell at temperatures below melting with clear delineation between the solid core and the premelted surficial liquid shell, as traditionally expected; b) the transition regime, in which the volumetric chemical potential and interfacial forces balance each other out; c) the disordered volume phase regime, in which a disordered interphase dominates the thermodynamic equilibrium of the system resulting in a partially crystalline core, and d) the mesoscale regime, in which the nanoparticles are no longer considered crystalline and experience an associated decrease in latent heat. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Nanotechnology, Other |