Relaxation of non-crystalline solids under mechanical stress
Relaxation of non-crystalline solids under mechanical stress
复制标题
DOI：
10.1016/s0022-3093(00)00213-1
复制
发表时间：
2000-09
影响因子：
3.5
通讯作者：
C. Gauthier;J. Pelletier;L. David;G. Vigier;J. Pérez
中科院分区：
文献类型：
--
作者：
C. Gauthier;J. Pelletier;L. David;G. Vigier;J. Pérez
受到热机械刺激的非晶固体在材料中具有类似的性质，如非晶聚合物、分子、金属或氧化物玻璃。本文的目的是给一些见解的玻璃或液体介质的机械响应，在其无序状态。为了描述非晶态固体的热机械响应，发展了分子理论。我们展示了如何准点缺陷（QPD）的概念引入的理论是一致的小角X射线散射结果。QPD模型的基础上的计算也比较各种玻璃形成系统的实验数据。这些不同系统的模型中引入的参数的大小进行了讨论。
Non-crystalline solids submitted to a thermomechanical stimulus have similar properties in materials as different as amorphous polymers, molecular, metallic or oxide glasses. The purpose of the present paper is to give some insights into the mechanical response of glassy or liquid media, in relation to their state of disorder. To describe thermomechanical response of non-crystalline solids, a molecular theory has been developed. We show how the concept of quasi-point defects (QPD) introduced in the theory is consistent with small angle X-ray scattering results. The calculations based on the QPD model are also compared to experimental data for various glass-forming systems. The magnitudes of the parameters, introduced in the model for these different systems, are discussed.