Kinetic Study of Non-Isothermal Crystallization in Se<sub>90-x</sub>Zn<sub>10</sub>Sb<sub>x</sub>(x = 0, 2, 4, 6) Chalcogenide Glasses

• 作者: Lamia Heireche Maamar Belhadji Mohamed Heireche
• 来源期刊: 结晶过程及技术期刊(英文)
• 学科: 化学
• 关键词: CRYSTALLIZATION Kinetics CHALCOGENIDE Glasses CRYSTALLIZATION Temperature Activation Energy Differential Scanning CALORIMETRY
• 年，卷（期）: 2014,（2）
• 页码范围: 111-120
• 页数: 10页
• 分类号: O6

摘要

Crystallization and glass transition kinetics of Se90-xZn10Sbx (x = 0, 2, 4, 6) chalcogenide glasses prepared by conventional melt-quenching technique were studied under non-isothermal condition using a differential scanning Calorimeter (DSC) measurement at different heating rates 5, 7, 10 and 12°C/min. The glass transition temperatures Tg, the crystallization temperatures Tc and the peak temperatures of crystallization Tp were found to be dependent on the compositions and the heating rates. From the dependence on the heating rates of Tg and Tp, the activation energy for glass transition, Eg, and the activation energy for crystallization, Ec, are calculated and their composition dependence is discussed. The activation energy of glass transition Eg, Avrami index n, dimensionality of growth m and activation energy of crystallization Ec have been determined from different models.