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Article Dans Une Revue Journal of Materials Science Année : 2008

A mechanism of nucleation during thermal decomposition of solids

Résumé

A microscopic model based on the appearance, diffusion, and aggregation of point defects allows to calculate the time of appearance of the first nucleus on a surface during a reaction between a solid and a gas. Calculated distributions of these times of appearance of the first nucleus are qualitatively compared to experimental ones, previously determined. The appearance of the point defects seems to be the most influential step on the time of appearance of the first nucleus. Moreover the comparison between experimental and calculated distributions allows to conclude that the frequency of appearance of the defects is higher on the edges than on the faces of the single crystal.

Dates et versions

hal-00409726 , version 1 (12-08-2009)

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Loïc Favergeon, Michèle Pijolat, Céline Helbert. A mechanism of nucleation during thermal decomposition of solids. Journal of Materials Science, 2008, 43 (14), pp.4675-4683. ⟨10.1007/s10853-008-2487-3⟩. ⟨hal-00409726⟩
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