Thermal analysis studies of Ge additive of Se-Te glasses.

Mohamed, M.; Abdel-Rahim, M.

GeSeTe ( x = 5, 15, 20, 35 at.%) bulk glasses were synthesized by the melt quenching method. The amorphous nature of the investigated glasses was determined by X-ray diffraction. Results of differential scanning calorimetry (DSC) of the studied compositions under non-isothermal conditions were reported and discussed. The glass transition temperature ( T), onset crystallization temperature ( T), and crystallization peak temperature ( T) were determined from DSC traces at different heating rates. It was found that the values of T, T, and T rely on both composition and heating rate. A double crystallization stages were observed in the DSC results. Various kinetics parameters such as the glass transition energy ( E), crystallization activation energy ( E), and rate constant ( K) were calculated. The glass-forming ability of the studied compositions was discussed as function of the determined kinetics parameters.

THERMAL analysis; GERMANIUM; QUENCHING (Chemistry); METALLIC glasses synthesis; DIFFERENTIAL scanning calorimetry; TEMPERATURE effect

Applied Physics A: Materials Science & Processing, 2016, Vol 122, Issue 4, p1

0947-8396

Academic Journal

10.1007/s00339-016-9822-3