Role of network connectivity on the elastic, plastic and thermal behavior of covalent glasses

被引：19

作者：

Feng, XW ^{[1
]}

Bresser, WJ ^{[1
]}

Zhang, M ^{[1
]}

Goodman, B ^{[1
]}

Boolchand, P ^{[1
]}

机构：

[1] Univ Cincinnati, Dept Elect & Comp Engn & Comp Sci, Cincinnati, OH 45221 USA

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1997年 / 222卷

关键词：

D O I：

10.1016/S0022-3093(97)90106-X

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：

Experiments on chalcogenide glasses show that local elasticity as measured by Raman scattering and the kinetic heat-flow near T-g as established from temperature modulated differential scanning calorimetry each display a threshold behavior associated with network connectivity as defined by the mean coordination, [r], near [r] = [r](c) similar or equal to 2.40. Network plasticity of amorphous group IV networks as deduced from nanometer-indentation hardness measurements varies linearly with [r] once [r] > 2.40. Consequences of these results connecting physical behavior of covalent networks with their connectivity are discussed. (C) 1997 Elsevier Science B.V.

引用

页码：137 / 143

页数：7

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