Study of Glass-Transition Kinetics of Pb-Modified Se$$_{}$$In$$_{20}$$20 System by Using Non-isothermal Differential Scanning Calorimetry

摘要: Glass-transition kinetics of \(\mathrm{Se}_{80}\mathrm{In}_{20-\mathrm{x}}\mathrm{Pb}_{\mathrm{x}}\) (\(x =\) 0, 5, 10, and 15) chalcogenide glasses have been carried out at different heating rates by using differential scanning calorimeter (DSC) under the non-isothermal condition. The glass-transition temperature \(T_{\mathrm{g}}\) peak \(T_{\mathrm{pg}}\) determined from DSC thermograms. reduced glass \(T_{\mathrm{rg}}\), total relaxation time \(\tau _{T_{g}}\) thermal-stability parameters \(K^{l}\) \(S\), activation energy transition \(E_{\mathrm{g}}\), fragility index \(F_{\mathrm{i}}\), average coordination number \(\langle Z\rangle \) calculated on basis experimental results. differences \((T_{\mathrm{c}}-T_{\mathrm{g}}), K_{\mathrm{gl}}, K^{l}, S\), \(E_{\mathrm{g}}\) are found to be maxima for \(\mathrm{Se}_{80}\mathrm{In}_{10}\mathrm{Pb}_{10}\) glass. This indicates that has highest thermal stability glass-forming ability in investigated compositional range. These results could explained modification chemical bond formation due incorporation Pb Se–In glassy matrix.