Experimental and numerical modeling of Czochralski crystal growth under axial vibrational control of the meltстатья
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Дата последнего поиска статьи во внешних источниках: 7 сентября 2017 г.
Аннотация:A novel scheme of application of axial vibration control (AVC) technique for Czochralski crystal growth
has been realized by means of oscillating baffle submerged under the growing crystal. Modeling of
heat-mass transfer in the growth system has been produced by both physical experiments with water–
glycerol mixture and computer simulations using FLUENT software. The laminar vibrational flows,
which suppressed thermoconvectional flows, have been arranged in the proposed AVC configuration.
The vibrational flows were stable and well controlled in the viscosity range 1–400 cPz, whenever the
crystal–melt interface was under or over the melt surface. The direction of the vibrational flows was
favorable for crystal growth. Simulations demonstrated that the shape of the crystal–melt interface is
strongly dependent on vibrational parameters.