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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Non-isothermal crystallization kinetic studies on MgO-Al2O3-SiO2-TiO2 glass
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Non-isothermal crystallization kinetic studies on MgO-Al2O3-SiO2-TiO2 glass

机译：MgO-Al2O3-SiO2-TiO2玻璃的非等温结晶动力学研究

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Thermal stability and crystallization kinetics of the glass 21% MgO, 21.36% Al2O3, 53.32% SiO2 and 4.11% TiO2 (mol%) has been studied using differential thermal analysis (DTA), dilatometry and X-ray diffraction (XRD). Glass in both bulk and frit forms were produced by melting in platinum crucible at 1600 degrees C for 1-2 h. From variation of DTA peak maximum temperature with heating rate, the activation energies of crystallization were calculated to be 340 kJ mol(-1) and 498 kJ mol(-1) for first and second crystallization exotherms, respectively. Crystallization of bulk glass was carried out at various temperatures and for different time durations in the range of 8501000 degrees C. The influence of the addition of TiO2 On the crystallization sequence of the glass was experimentally determined and discussed. (C) 2007 Published by Elsevier B.V.
机译：使用差热分析（​​DTA），热膨胀法和X射线衍射（XRD）研究了21％MgO，21.36％Al2O3、53.32％SiO2和4.11％TiO2（mol％）的玻璃的热稳定性和结晶动力学。通过将铂坩埚在1600摄氏度的温度下熔化1-2小时，可以生产块状和玻璃料形式的玻璃。从DTA峰值最高温度随加热速率的变化，计算出第一和第二结晶放热的结晶活化能分别为340 kJ mol（-1）和498 kJ mol（-1）。块状玻璃的结晶在8501000摄氏度的范围内于不同温度，不同时间段内进行。通过实验确定并讨论了TiO2添加对玻璃结晶顺序的影响。 （C）2007由Elsevier B.V.发布

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