A detailed study of isothermal crystallization of As2Se3 undercooled liquid

被引：0
作者：
Jana Holubová
Zdeněk Černošek
Eva Černošková
机构：
[1] University of Pardubice,Department of General and Inorganic Chemistry, Faculty of Chemical Technology
[2] v.v.i.,Joint Laboratory of Solid State Chemistry of Institute of Macromolecular Chemistry of Czech Academy of Sciences
[3] and University of Pardubice,undefined
来源：
Journal of Thermal Analysis and Calorimetry | 2013年 / 114卷
关键词：
Nucleation; Crystallization; As; Se; Differential scanning calorimetry;
D O I：
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摘要：
Isothermal crystallization of an As2Se3 undercooled melt was studied by differential scanning calorimetry and described using the classical theory of nucleation and crystal growth. The maximum rate of nucleation and crystal growth was observed to occur at approximately 235 and 350 °C, respectively. The activation energies of nucleation and crystal growth were determined to be ΔED = 311 kJ mol−1 and ΔE* = 104 kJ mol−1, respectively. The temperature dependencies of both the activation free energy of nucleation, ΔG*, and the critical diameter, r*, were also calculated.
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页码：997 / 1002
页数：5
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