Glass transition and crystallization kinetics of a barium borosilicate glass by a non-isothermal method
作者： Andreia A. S. Lopes , Roque S. Soares , Maria M. A. Lima , Regina C. C. Monteiro
DOI: 10.1063/1.4863334
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摘要: The glass transition and crystallization kinetics of a with molar composition 60BaO-30B2O3-10SiO2 were investigated by differential scanning calorimetry (DSC) under non-isothermal conditions. DSC curves exhibited an endothermic peak associated the two partially overlapped exothermic peaks glass. dependence temperature (Tg) maximum (Tp) on heating rate was used to determine activation energy (Eg), for (Ec), Avrami exponent (n). X-ray diffraction (XRD) revealed that barium borate (β-BaB2O4) first crystalline phase be formed followed formation silicate (Ba5Si8O21). variations fraction (χ) also examined. When increased ...
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