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arXiv 1805.01433cond-mat.mtrl-sci
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高温硅酸盐玻璃的调温差示扫描量热法分析

Temperature-Modulated Differential Scanning Calorimetry Analysis of High-Temperature Silicate Glasses

Tobias K. Bechgaard, Ozgur Gulbiten, John C. Mauro, Yushu Hu, Mathieu Bauchy, Morten M. Smedskjaer

摘要:

差示扫描量热法(DSC)是用于硅酸盐玻璃的最通用的探针之一,允许测定例如,转变温度(玻璃化、结晶化、熔化)和热容量的温度依赖性。然而,对于以重叠过渡和低灵敏度为特征的眼镜,这是由于富含SiO2的组合物在玻璃化转变期间热容变化小或高温下热电偶的灵敏度低。使用温度调制DSC(TM-DSC)可以克服这些挑战,该温度调制DSC能够分离重叠信号并以增加测量持续时间为代价提高灵敏度。

英文摘要:

Differential scanning calorimetry (DSC) is one of the most versatile probes for silicate glasses, allowing determination of, e.g., transition temperatures (glass, crystallization, melting) and the temperature dependence of heat capacity. However, complications arise for glasses featuring overlapping transitions and low sensitivity, e.g., arising from SiO2-rich compositions with small change in heat capacity during glass transition or the low sensitivity of thermocouples at high temperature. These challenges might be overcome using temperature-modulated DSC (TM-DSC), which enables separation of overlapping signals and improved sensitivity at the expense of increased measurement duration.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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