MICROSTRUCTURAL FEATURES OF SINTERED SI3N4 SIC-WHISKERS COMPOSITES - MECHANICAL INTEGRITY OF WHISKERS/

Authors
BRITO ME BANDO Y MITOMO M SAITO S
Citation
Me. Brito et al., MICROSTRUCTURAL FEATURES OF SINTERED SI3N4 SIC-WHISKERS COMPOSITES - MECHANICAL INTEGRITY OF WHISKERS/, Journal of Materials Science, 29(1), 1994, pp. 250-254
Citations number
21
Categorie Soggetti
Material Science
Journal title
Journal of Materials Science → ACNP
ISSN journal
00222461
Volume
29
Issue
1
Year of publication
1994
Pages
250 - 254
Database
ISI
SICI code
0022-2461(1994)29:1<250:MFOSSS>2.0.ZU;2-T
Abstract
A detailed microstructural analysis of slip-cast Si3N4/SiC-whisker com posites has been made by TEM. In spite of the gentle forming process, SiC whisker breakage constitutes a fundamental feature of this materia l. The breaking takes place during the sintering process and could be associated with residual thermal stresses, as revealed by the experime ntal evidence. The dramatic decrease in the whiskers aspect ratio tran slates into little or no effect of whisker addition on the mechanical properties of the Si3N4 matrix.