The ternary Se₇₉Te₂₀Pb₁ chalcogenide glass is prepared using melt quenching technique. Differential scanning calorimetry technique (DSC) is used to investigate the kinetics of crystallization of amorphous-crystallization (a-c) phase transformation under non-isothermal conditions at three different heating rates; 5, 10 and 15° C min^-1. The variation of crystallized activation energy (E_c) with crystallized fraction (ϰ) and hence, with temperature (T) is investigated using five iso-conversional methods namely KAS, OFW, Friedman, Tang and Chen and Starink. It is found that E_c is not constant but vary with ϰ as well as T. Thus, the iso-conversional analysis of investigated glass indicates that the assumption of constant E_c is not appropriate.

中文翻译：

---

非等温差示扫描量热法研究Se79Te20Pb1玻璃非晶-晶化转变的晶化活化能

采用熔融淬火技术制备了三元Se ₇₉ Te ₂₀ Pb ₁硫族化物玻璃。差示扫描量热技术（DSC）用于研究非等温条件下三种不同加热速率下非晶-结晶（ac）相变的结晶动力学。5、10和15°C min ^-1。结晶活化能（的变化ë _Ç）与结晶级分（κ），因此，随着温度（Ť）是使用五个异conversional方法即KAS，OFW，弗里德曼，汤和Chen和Starink调查。发现E _c不是常数，而是随κ以及Ť。因此，对研究玻璃的等转换分析表明，常数E _c的假设是不合适的。