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自动化与信息科学期刊
SJR: 0.232 SNIP: 0.464 CiteScore™: 0.27

ISSN 打印: 1064-2315
ISSN 在线: 2163-9337

卷:
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自动化与信息科学期刊

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-Roev
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

ABSTRACT

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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