硅酸盐学报

硫系玻璃动力学强弱性评测方法

作者：陈振1 顾少轩1 陶海征1 唐博博2 何蓉2 赵仲勋2 梁立新2 徐华峰2

单位：(1. 硅酸盐建筑材料国家重点实验室武汉理工大学武汉 430070 2. 湖北新华光信息材料有限公司湖北襄阳 441057)

关键词：硫系玻璃动力学强弱性黏温关系量热法

分类号：TB484

出版年,卷(期):页码：2019,47(2):0-0

DOI：10.14062/j.issn.0454-5648.2019.02.16

摘要：

玻璃动力学强弱性指数m值的主要评测方法有两种：通过玻璃转变温度附近黏温关系测试直接获得mvis值；基于量热分析，根据不同升温速率获得假想温度，并假定玻璃转变温度范围内假想温度Tf符合Arrhenius关系，通过理论推导间接获得mDSC值。由于玻璃转变温度范围内假想温度Tf和黏度的关系实际上并非严格遵循Arrhenius关系，因此mDSC和mvis之间存在偏差。以系列商用硫系玻璃为例，通过两种评测方法比较，建立了通过mDSC推算mvis的经验公式，实现了准确、快速的评测硫系玻璃动力学强弱性。

There are two evaluation methods to obtain dynamic fragility. They are a) directly determination of mvis index using viscosity values near the glass transition temperature, and b) determination of fictive temperature Tf at different heating rates and the Tf around the glass transition temperature rangefollowing the Arrhenius behavior, thus obtaining the mDSC index by theoretical deductionbased on calorimetric analysis method. However, in the glass transition temperature range, the Tf has not strict Arrhenius relationship with temperature, thus the calorimetric fragilities index mDSC deviates from the mvis. Taking commercialchalcogenide glasses as an example, we proposed an empirical formula for calculating mvis through mDSC and achieved the accurate and rapid evaluation of the dynamic fragility of chalcogenide glassesvia comparing the two evaluation methods.

基金项目：

湖北省技术创新专项重大项目(2016AAA029)。

作者简介：

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