Nucleation in decomposition reactions of solids

We have seen that nucleation (see section 8.5.1) can be described by considering two groups of elementary steps  

Several laws were proposed in the literature to describe the speed of formation of the nuclei during decomposition reactions they were listed and analyzed in particular by Galwey and Brouwn [GAL 99], These laws come either from simple condensations or from condensations with potential nuclei (see Chapter 8). In this last case, even with the pseudo-steady state modes we can lead to a specific frequency of nucleation function of time. 

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