An alternative method to study the cooling of glasses from melt to solid phase

被引：0
|
作者：
Bergo, P. [1 ]
Pontuschka, W. M. [1 ]
Prison, J. M. [2 ]
机构：
[1] Univ Sao Paulo, Inst Phys, BR-05315970 Pirassununga, SP, Brazil
[2] IPEN CNEN SP, Brazilian Nucl Energy Commiss, BR-05315970 Sao Paulo, Brazil
来源：
EXPERIMENTAL THERMAL AND FLUID SCIENCE | 2009年 / 33卷 / 02期
关键词：
Microwave; Reflection; Cooling stage; Glass;
D O I：
10.1016/j.expthermflusci.2008.10.001
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The aim of this preliminary work was to present a novel method, suitable to investigate the glass cooling, from melt to solid state, based on a fast, non-usual and easy microwave method. The following glass system xBaO . (100-x)B2O3 (x = 0% and 40%) was selected as an example for this study. The melt was poured inside a piece of waveguide and then, its cooling was monitored by the microwave signal as a function of time. The variations in the signal can provide valuable informations about some structural changes that take place during the cooling stages, such as relaxation processes. This method can be useful to investigate the cooling and heating of other materials, opening new possibilities for investigation of dielectric behavior of materials under high temperatures. (C) 2008 Elsevier Inc. All rights reserved.
引用
收藏
页码：393 / 395
页数：3
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