INFLUENCE OF MICROSTRUCTURE ON THE THERMOMECHANICAL PROPERTIES OF ALUMINA CERAMICS

被引：7
|
作者：
TOMASZEWSKI, H
机构：
来源：
CERAMICS INTERNATIONAL | 1992年 / 18卷 / 01期
关键词：
D O I：
10.1016/0272-8842(92)90061-H
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 effect of microstructure parameters on fracture and thermal shock resistance of alumina ceramics was studied. As it was demonstrated, a specific range of Al2O3 grain size exists, in which an increase of resistance to fracture is observed. This region corresponds to the maximum density of microcracks with length close to the l(m) value from Hasselman's minimum curve DELTA-T = f(l0). The interaction of the crack front with microcracks existing in alumina ceramics is a possible mechanism of observed toughening.
引用
收藏
页码：51 / 55
页数：5
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