Silicate melt structural relaxation: rheology, kinetics, and Adam-Gibbs theory
Silicate melt structural relaxation: rheology, kinetics, and Adam-Gibbs theory
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DOI：
10.1016/0009-2541(95)00168-9
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发表时间：
1996-06
期刊：
影响因子：
3.9
通讯作者：
Y. Bottinga;P. Richet
中科院分区：
文献类型：
--
作者：
Y. Bottinga;P. Richet
本文综述了粘性液体弛豫过程的亚当-吉布斯理论在硅酸盐熔体流变学中的几个应用。这一理论很好地再现了同构粘度观测，它解释了剪切变稀的发生，并提供了一个基本原理的压力依赖性的硅酸盐熔体粘度。Adam-Gibbs理论的关键特征是计算结构弛豫时间。这一方面使得它也可以用于研究结构弛豫的动力学。静态实验得到的动力学数据与该模型吻合良好。
Several applications of the Adam-Gibbs theory of relaxation processes in viscous liquids to the theology of silicate melts are reviewed. This theory reproduces very well the isostructural viscosity observations, it explains the occurrence of shear thinning and offers a rationale for the pressure dependence of silicate melt viscosities. The key feature of the Adam-Gibbs theory is the calculation of the structural relaxation time. This aspect makes it also possible to use it for studying the kinetics of structural relaxation. Kinetic data obtained with static experiments are shown to be in good agreement with this model.