Damage‐Resistant SiC–AlN Layered Composites with Surface Compressive Stresses
作者:
Rengaswamy Sathyamoorthy,
Anil V. Virkar,
Raymond A. Cutler,
期刊:
Journal of the American Ceramic Society
(WILEY Available online 1992)
卷期:
Volume 75,
issue 5
页码: 1136-1141
ISSN:0002-7820
年代: 1992
DOI:10.1111/j.1151-2916.1992.tb05550.x
出版商: Blackwell Publishing Ltd
关键词: silicon carbide;aluminum nitride;surface;compression;damage
数据来源: WILEY
摘要:
Three‐layer samples in the SiC‐AlN system with outer layers richer in SiC, as well as monolithic samples of uniform composition, were fabricated by hot‐pressing. The strain gage technique, previously described, was used to estimate residual compressive stress in the outer layers developed because of the difference in coefficients of thermal expansion between inner and outer layers. Bar‐shaped samples were indented using a Vickers indenter under loads as high as 20 kg (196 N) on outer layers and were fractured in three‐point bending. Three‐layer samples with outer layers under compression exhibited increased resistance to the contact‐induced damage in comparison to the monoc
点击下载:
PDF
(775KB)
返 回