Abstract
The crystallization process of Li2B4O7 in the glass of stoichiometric composition, characterized by the crystal growth of pre-existing nuclei, was analyzed kinetically by means of DTA. Because the number of pre-existing nuclei for the subsequent growth varies depending on the cooling rate of the glass-forming melt and heating rate of the as-prepared glass, a modified Kissinger plot was applied for evaluating the apparent activation energy to the crystal growth in the glass samples with three different thermal histories, i.e., the pre-annealed, slowly quenched and quickly quenched glasses. The process was characterized by the three dimensional growth of pre-existing nuclei with the apparent activation energy of ca 340 kJ mol−1.
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Koga, N., Yamaguchi, K. & Šesták, J. Crystallization Kinetics of Lithium Diborate Glass by DTA. Journal of Thermal Analysis and Calorimetry 56, 755–761 (1999). https://doi.org/10.1023/A:1010154122439
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DOI: https://doi.org/10.1023/A:1010154122439