Abstract
The paper deals with the investigation of the method of obtaining the ultrafine powders by thedesublimationprocess. In the course of the experiments, the effect of temperature, pressure, and degree ofsupersaturation on the process kinetics and the dispersion size distribution function was investigated.The existence ofthe stage of the phenomenon of multiple coagulation with a high concentration of nucleates in a supersaturatedvapor-gas mixture has been experimentally confirmed. Namely, it was established that with a large initial supersaturation, when a large number of embryos (monomers) of the dispersed phase are rapidly formed per unit volumeof the apparatus, the contribution of multiparticle collisions is great. The obtained data may be very important forworking out the engineering method for calculating and optimizing the regimes of aggregation processes to createhighly homogeneous stable nanodispersions.
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