MECHANICAL STRENGTH INCREASE OF ABRADED SILICA GLASS BY HIGH-PRESSURE WATER-VAPOR TREATMENT

被引：25
|
作者：
LI, H
TOMOZAWA, M
机构：
[1] Materials Engineering Department, Rensselaer Polytechnic Institute, Troy
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 1994年 / 168卷 / 03期
关键词：
D O I：
10.1016/0022-3093(94)90341-7
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：
The mechanical strength of abraded silica glass was increased by more than 200% by a saturated water vapor treatment at 250-degrees-C for 4 days. Fatigue resistance of the glass also improved with the treatment. The apparent flaw size estimated by optical microscopy remained unchanged. These features can be explained in terms of the crack tip blunting caused by dissolution and re-precipitation of silica glass assisted by capillary condensation of water near the crack tip, or by viscous flow of the glass containing water.
引用
收藏
页码：287 / 292
页数：6
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