FRACTURE-TOUGHNESS AND THERMAL-SHOCK BEHAVIOR OF SILICON NITRIDE-BORON NITRIDE CERAMICS

被引：59
作者：
LUTZ, EH
SWAIN, MV
机构：
[1] Department of Mechanical Engineering, University of Sydney, Sydney, New South Wales
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1992年 / 75卷 / 01期
关键词：
SILICON NITRIDE; BORON NITRIDE; FRACTURE TOUGHNESS; THERMAL SHOCK; STRENGTH;
D O I：
10.1111/j.1151-2916.1992.tb05443.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：
Fracture toughness behavior, stress-strain behavior, and flaw resistance of pressureless-sintered Si3N4-BN ceramics are investigated. The results are discussed with respect to the reported thermal shock behavior of these composites. Although the materials behave linear-elastic and exhibit no R-curve behavior, their flaw resistance is different from that of other linear-elastic materials. Whereas the critical thermal shock temperature difference (DELTA-T(c)) is enhanced by adding BN, the content of BN has no influence on the strength loss during severe thermal shocks.
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页码：67 / 70
页数：4
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