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Note on the Recrystallisation of Large Crystals

✍ Scribed by Doz. Dr. J. Skřivánek; V. Vacek; S. Žáček

Publisher
John Wiley and Sons
Year
1974
Tongue
English
Weight
153 KB
Volume
9
Category
Article
ISSN
0232-1300

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✦ Synopsis

geii near Prague Note on the Recrystallisation of Large Crystals A process of recrystallisation, similar to the Ostwald ripening, can occur also in a dispersion of larger particles, these being particles for which the Gibbs-Thompson relation holds. It is shown that such a proccess cannot be described by a simple continuity equation, when the kinetic relation for time rate d particle dimension is assumed in a form r(r, t)=p(r)q(t),

When solid particles are dispersed in their own saturated or supersaturated solution, there is a tendency f o r the smaller ones to dissolve and the solute to be deposited on the larger particles. Thus the small particles disappear, the large grow larger, and the particle size distribution gradually changes. The process d particle coarsening, first discovered by Ostwald, is called Odwald ripening or ageing (MULLIN). The theory d this process was given by LIFBHITZ,

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