Kinetic critical radius in nucleation and growth processes - Trapping effect

Research output: Article

15 Citations (Scopus)

Abstract

The critical nucleus size - above which nuclei grow but below which they dissolve - during diffusion-controlled nucleation in a binary solid-solid phase transformation process is calculated using the kinetic Monte Carlo technique. If atomic jumps are slower in an A-rich nucleus than in the embedding B-rich matrix, the nucleus traps the A atoms approaching its surface. It does not have enough time to eject A atoms before new ones arrive, even if this were favourable thermodynamically. In this case, the critical nucleus size can be as much as an order of magnitude smaller than expected from equilibrium thermodynamics or without trapping.

Original languageEnglish
Pages (from-to)5639-5645
Number of pages7
JournalActa Materialia
Volume58
Issue number17
DOIs
Publication statusPublished - okt. 2010

Fingerprint

Nucleation
Atoms
Kinetics
Phase transitions
Thermodynamics

ASJC Scopus subject areas

  • Ceramics and Composites
  • Metals and Alloys
  • Polymers and Plastics
  • Electronic, Optical and Magnetic Materials

Cite this

Kinetic critical radius in nucleation and growth processes - Trapping effect. / Erdélyi, Z.; Balogh, Z.; Beke, D. L.

In: Acta Materialia, Vol. 58, No. 17, 10.2010, p. 5639-5645.

Research output: Article

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