Study of zinc incorporation on the non-isothermal crystallization in glassy selenium using iso-conversional approach

• Published in: Materials letters Vol. 138; pp. 171 - 174
• Main Authors: Dohare, C., Mehta, N.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.01.2015
• Subjects: Activation energy; Conversion; Crystal growth; Crystallization; Differential scanning calorimetry; Glasses; Glassy; Mathematical models; Metals and alloys; Reaction kinetics; Zinc; Crystal growth; Glasses; Metals and alloys; Activation energy
• ISSN: 0167-577X; 1873-4979
• DOI: 10.1016/j.matlet.2014.09.089

The crystallization kinetics of glassy Se (g-Se) and glassy Se98Zn2 alloy has been studied by means of differential scanning calorimetric (DSC) technique. Iso-conversional methods [Kissinger–Akahira–Sunose (KAS), Flynn–Wall–Ozawa (FWO), Tang and Straink] were used to determine the various kinetic parameters (i.e. crystallization temperature Tα, activation energy of crystallization Eα) of crystallization process in non-isothermal mode. The monotonous decrement in activation energy, Eα with the extent of conversion, α confirms the complex kinetic mechanism of g-Se and Se98Zn2 alloy. The reaction model, ‘Avrami–Erofeev’ g(α)=[−ln(1−α)]1/n has been followed to describe the crystallization process with n=1.5 for g-Se and n=2.0 for Se98Zn2 alloy. [Display omitted] •We have synthesized new binary glass Se98Zn2.•Advanced iso-conversional method is used for analysis of DSC data.•Effect of incorporation of Zn is studied on crystallization of selenium.