AVRAMI–KOLMOGOROV–JOHNSON–MEHL KINETICS FOR NANOPARTICLES

Vladimir P. Zhdanov ()
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Vladimir P. Zhdanov: Department of Applied Physics, Chalmers University of Technology, S-41296 Göteborg, Sweden;

Surface Review and Letters (SRL), 2008, vol. 15, issue 05, 605-612

Abstract: In the conventional Avrami–Kolmogorov–Johnson–Mehl model, the reaction or phase transition occurring in the 2D or 3D infinite medium is considered to start and proceed around randomly distributed and/or appearing nucleation centers. The radius of the regions transformed is assumed to linearly increase with time. The Monte Carlo simulations presented, illustrate what may happen if the transformation takes place in nanoparticles. The attention is focused on nucleation on the regular surface, edge and corner sites, and on the dependence of the activation energy for elementary reaction events on the local state of the sites.

Keywords: Reactions in the solids; phase transitions; crystallization; nucleation; reaction fronts; nanoparticles; regular surface sites; edge and corner sites; computer simulations; 68.35.Rh; 82.65.+r; 82.40.Np; 82.20.Wt (search for similar items in EconPapers)
Date: 2008
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DOI: 10.1142/S0218625X08011937

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