Glass transition and crystallization kinetics of Se98-xCd2Inx (x=0, 2, 6 and 10) glassy alloys

The calorimetric parameters of glassy Se98-xCd2Inx (x = 0, 2, 6 and 10) alloys were investigated using differential scanning calorimetry (DSC) under non-isothermal conditions at different heating rates of 5, 10, 15 and 20 K min(-1). The composition dependencies of activation energy of glass transitions (E (g)), crystallization activation energy (E (c)), fragility index (F), Hruby number (K (gl)) and rate constant (K (p)) were evaluated from DSC curves. Results indicate that kinetic parameter varies with In content in Cd-Se glassy matrix. It is observed that crystallization activation energy (E (c)) and K (p) are minimum and K (gl) is maximum for Se92Cd2In6 glass. Therefore, Se92Cd2In6 glass is the most thermally stable glass and has highest glass-forming ability in this series. It can be explained by chemical bond theory of solids.