THE REGIMES OF THE REALIZATION OF DESUBLIMATION METHOD FOR ULTRADISPERSE POWDER PRODUCTION

Авторы

  • Kazenova Aykerim
  • Brener Arnold
  • Golubev Vladimir Grigorievich
  • Shapalov Shermakhan
  • Tortbayeva Dinara Ryskulbekkyzy
  • Kenzhalieva Gulmira
  • Gregory Ivahnuk

Ключевые слова:

desublimation, ultradisperse, nanodispersions, method, nano-powders, super-saturation, multiparticle.

Аннотация

The paper deals with the investigation of the method of obtaining the ultrafine powders by the
desublimationprocess. In the course of the experiments, the effect of temperature, pressure, and degree of
supersaturation on the process kinetics and the dispersion size distribution function was investigated.The existence of
the stage of the phenomenon of multiple coagulation with a high concentration of nucleates in a supersaturated
vapor-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 volume
of the apparatus, the contribution of multiparticle collisions is great. The obtained data may be very important for
working out the engineering method for calculating and optimizing the regimes of aggregation processes to create
highly homogeneous stable nanodispersions.

Загрузки

Опубликован

2019-12-05