Some problems in the investigation of the processes of directional crystallization under microgravity (creating the MORPHOS installation)

1Shpak, AP, 1Fedorov, OP, 1Bersudsky, EI, 1Zhivolub, EL
1G.V. Kurdyumov Institute for Metal Physics of the National Academy of Sciences of Ukraine, Kyiv, Ukraine
Kosm. nauka tehnol. 2002, 8 ;(5-6):019-027
Publication Language: Russian
The MORPHOS installation for the ground-based study of solidification structure during directional crystallization of transparent substances is designed. The work performed is a stage of preparation of the integrated space experiment which will allow one to detect fundamental peculiarities of structure formation during directional crystallization under space conditions. The spesial feature of our approach is the possibility to investigate single crystals grown in various crystallographic directions. The comparison of flight and ground-based data as well as their comparison with the experiment in quasi-two-dimensional preparation will allow one to determine the basic physical mechanisms of gravity convection effect on structure formation of crystalline materials and to make some recommendations 1 concerning methods of action on this process under space conditions as well.
Keywords: crystalline materials, gravity convection, structure formation
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