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Document IIF

Nucléation et congélation d'eau.

Ice nucleation and freezing of water.

Auteurs : LIST R.

Résumé

Ice initiation does not occur at a temperature of 0 °C. It is rarely spontaneous in nature and requires the presence of special substances which act as ice nuclei. The energy barriers are too high to be overcome and supercooling (water temperature less than 0 °C) is generally required. Nature relies on different types of ice nuclei to initiate the ice phase, be it in the atmosphere or in water. In supercooled water, once tiny ice particles are formed on immersion nuclei, they will grow in specific crystallographic shape by molecular diffusion. Ice growth takes time and occurs at a speed which depends on the temperature of the surrounding supercooled bulk water.

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Format PDF

Pages : 61-67

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    20 €

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Détails

  • Titre original : Ice nucleation and freezing of water.
  • Identifiant de la fiche : 2002-0763
  • Langues : Anglais
  • Source : Proceedings of the second Workshop on Ice Slurries of the IIR.
  • Date d'édition : 25/05/2000

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