Thermal and mechanical characterization of borosilicate glass

被引：53
|
作者：
Bouras, N. [1 ]
Madjoubi, M. A. [1 ]
Kolli, M. [1 ]
Benterki, S. [1 ]
Hamidouche, M. [1 ]
机构：
[1] Univ Farhat Abbas, OMP, Lab Mat Non Metall, Setif, Algeria
来源：
PROCEEDINGS OF THE JMSM 2008 CONFERENCE | 2009年 / 2卷 / 03期
关键词：
Borosilicate glass; Structure; Indentation Vickers; Thermal expansion; Strengthening; ALKALI BORATE GLASSES;
D O I：
10.1016/j.phpro.2009.11.074
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The aim of this work is to characterize thermally (dilatometric analysis) and mechanically a Pyrex type borosilicate glass. The mechanical tests (Vickers indentations, mechanical strength and fracture toughness) were made on the glass in an annealed state and after a chemical strengthening treatment by ionic exchange. The indentations imprints morphologies and details were observed by optical and scanning electron microscopy. The dilatometric analysis shows that the thermal expansion variation with temperature is essentially non linear, increasing rapidly up to 200 degrees C and slowing down beyond. The optimal glass chemical strengthening was obtained for a bath duration of 15 hours. This corresponds to a relatively moderate increase of the mechanical strength (similar to 70%). The fracture toughness measured by indentation was appreciably improved by the chemical treatment. It seems also to increase with the applied indentation load. (C) 2009 Elsevier B.V. All rights reserved
引用
收藏
页码：1135 / 1140
页数：6
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