A RANDOM-WALK MODEL OF RELAXATIONS IN SUPERCOOLED MELTS

被引：15

作者：

ARKHIPOV, VI

BASSLER, H

机构：

[1] UNIV MARBURG,FACHBEREICH PHYS CHEM,D-35032 MARBURG,GERMANY

[2] UNIV MARBURG,ZENTRUM MAT WISSENSCH,D-35032 MARBURG,GERMANY

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1994年 / 172卷 / pt 1期

关键词：

D O I：

10.1016/0022-3093(94)90463-4

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A model of glass transition and relaxations in supercooled liquids is presented. The random-walk approach is used for the description of structural-unit dynamics in configurational space. Based on the model, the following experimental data are explained quantitatively: (i) the super-Arrhenius-type and Arrhenius-type temperature dependences of viscosity for weakly bonded and strongly bonded glasses, respectively; (ii) logarithmic dependence of glass-transition temperature upon cooling rate for strongly bonded glasses and sub-logarithmic dependence for weakly bonded glasses.

引用

页码：396 / 400

页数：5

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