Photoinduced Fluidity and Viscoelasticity in Chalcogenide Glasses

被引：3

作者：

Gueguen, Yann ^{[1
]}

Sangleboeuf, Jean-Christophe ^{[1
]}

Rouxel, Tanguy ^{[1
]}

Keryvin, Vincent ^{[2
]}

机构：

[1] Univ Rennes 1, LARMAUR Equipe Verres ERL CNRS 6274, F-35042 Rennes, France

[2] Univ Bretagne Sud, LIMATB EA 4250, F-56321 Lorient, France

来源：

INTERNATIONAL JOURNAL OF APPLIED GLASS SCIENCE | 2012年 / 3卷 / 01期

关键词：

PHOTOSTRUCTURAL CHANGES; TEMPERATURE-DEPENDENCE; AMORPHOUS SELENIUM; RELAXATION; TRANSITION; VISCOSITY; BEHAVIOR; FLOW;

D O I：

10.1111/j.2041-1294.2012.00081.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：

This work is an attempt to apply conventional mechanical testing to characterize the photoinduced viscoelastic behavior of chalcogenide glasses. Creep or relaxation-recovery experiments are usually performed to characterize the delayed elastic contribution to deformation, during thermally activated flow. In this article, relaxation-recovery is used to characterize delayed elasticity under irradiation condition and to investigate the influence of the photon irradiation on the viscoelastic behavior. It is showed that thermally activated processes and photoinduced ones are decoupled. The viscoplastic deformation under irradiation is the sum of thermally activated and photoinduced processes. As soon as the irradiation ceases, chalcogenide glasses behave exactly as if they had never been irradiated. The photoinduced viscoelastic behavior seems to be solely due to transient photoinduced structural defects.

引用

页码：53 / 58

页数：6

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