Open AccessStudy of influence of volumetric radiating overcooling of a melt on the form of front of crystallization by means of numerical modeling processes of heat transfer at growth of sapphire crystals from the melt
Author(s) -
М. Г. Васильев,
S. I. Bakholdin,
V. M. Krymov
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1400/4/044035
Subject(s) - crystallization , supercooling , materials science , sapphire , heat transfer , front (military) , crystal growth , czochralski method , thermal , absorption (acoustics) , thermodynamics , mechanics , optics , composite material , crystallography , laser , chemistry , optoelectronics , geology , doping , oceanography , physics
It is lead numerical modeling of processes of heat exchange at growth of crystals of sapphire from a melt by Stepanov and Czochralski methods. The influences of volumetric radiating overcooling of a melt and of growth speed on the form of front of crystallization and distribution of temperature near to it is studied. It is shown, that the account of absorption of thermal radiation in a melt can lead to formation of volumetric supercooled areas near to crystallization front and to appreciable change of its shape.