Generalized Gibbs-Thomson equation for nanoparticles at grain boundaries
| Autor: | Günter Gottstein, Lasar S. Shvindlerman, Mingxuan Lin |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Phase boundary
Materials science Polymers and Plastics Precipitation (chemistry) Gibbs–Thomson equation Triple junction Metals and Alloys Nucleation Thermodynamics 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Electronic Optical and Magnetic Materials 0103 physical sciences Ceramics and Composites Grain boundary diffusion coefficient Grain boundary Particle size 010306 general physics 0210 nano-technology |
| Zdroj: | Acta Materialia. 129:361-365 |
| ISSN: | 1359-6454 |
| Popis: | A general Gibbs-Thomson equation is derived from the complete free energy description of precipitates at grain boundaries, taking into account the excess free energy of the grain boundary – phase boundary junction. In this model, the equilibrium shape of particles shows a strong dependency on the particle size, which gives rise to a deviation from the classical theory of precipitation. The influence of the line tension of triple junctions on the nucleation energy barrier is discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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