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Journal of Automation and Information Sciences
SJR: 0.275 SNIP: 0.59 CiteScore™: 0.8

ISSN 印刷: 1064-2315
ISSN オンライン: 2163-9337

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Journal of Automation and Information Sciences

DOI: 10.1615/JAutomatInfScien.v40.i1.30
pages 35-45

The Technique of Additional Purification of Substances by the Directional Solidification Method by Means of Flash Heating of a Melt

Yuriy P. Ladikov-Royev
Institute of Space Research of National Academy of Sciences of Ukraine and State Space Agency of Ukraine, Kiev, Ukraine
Petr P. Rabochiy
Institute of Space Research of National Academy of Sciences of Ukraine and National Space Agency of Ukraine, Kiev, Ukraine

要約

A technique allowing greater degree of substances purification and using the directed crystallization method of periodic intensive heating the segment of lateral surface of the vial with a melt near the crystallization front, is proposed. Numerical simulations has shown that this mode of heating leads to the formation of convective vortex, which, as a result of the Archimedean force, rises to the surface, grasping and carrying out impurities to the top of the molten zone, which are located near a zone of crystallization. This, in turn, leads to the decrease in the concentration of impurities in the greater part of the crystal resulting from growth, i.e. to a more pure substance in this part of the crystal.


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