コランダム単結晶育成中における氷晶石フラックスの組成変化

概要

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Variation of the chemical composition of an Na_3AlF_6-Al_2O_3 growth solution in the growth process of single corundum crystals was studied by the chemical analysis. The concentrations of aluminum and fluorine decreased with time, whereas the concentration of sodium increased. The optical quality and the advancing rate (g/h) of the growing crystal were improved by adding a small amount of AlF_3 compound as sources of aluminum and fluorine, and large crystals with good quality were obtained.
1993-06-01