Ostwald ripening with non-equilibrium vacancies

A. M. Gusak*, G. V. Lutsenko, King-Ning Tu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Ripening in non-dilute binary solutions is analyzed by taking into account the influence of non-equilibrium vacancies, generated by non-equal intrinsic fluxes of the components. A mathematical model has been developed for both coherent and incoherent precipitates. In the case of coherent precipitates the ripening kinetics demonstrates three stages, with the second stage characterized by a time exponent closer to 1/2 than to 1/3. The standard deviation of the particle size distribution is larger than that for a Lifshitz-Slyozov-Wagner distribution.

Original languageEnglish
Pages (from-to)785-791
Number of pages7
JournalActa Materialia
Volume54
Issue number3
DOIs
StatePublished - 1 Feb 2006

Keywords

  • Coarsening
  • Diffusion
  • Mean-field theory
  • Vacancies

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