R-CURVE BEHAVIOR OF SILICON-NITRIDE TITANIUM NITRIDE COMPOSITES

Authors
CHOI HJ CHO KS LEE JG KIM YW
Citation
Hj. Choi et al., R-CURVE BEHAVIOR OF SILICON-NITRIDE TITANIUM NITRIDE COMPOSITES, Journal of the American Ceramic Society, 80(10), 1997, pp. 2681-2684
Citations number
25
Categorie Soggetti
Material Science, Ceramics
Journal title
Journal of the American Ceramic Society → ACNP
ISSN journal
00027820
Volume
80
Issue
10
Year of publication
1997
Pages
2681 - 2684
Database
ISI
SICI code
0002-7820(1997)80:10<2681:RBOSTN>2.0.ZU;2-6
Abstract
The R-curve for Si3N4-40 wt% TiN composites was estimated by the inden tation-strength method and compared to that of monolithic Si3N4 with d uplex microstructure. Both materials exhibited rising R-curve behavior , The Si3N4-TiN composites, however, displayed better damage tolerance and higher resistance to crack growth. From TEM observation, it was i nferred that this superior performance of Si(3)N4-TiN composites can b e attributed mainly to stress-induced microcracking at heterophase (Si 3N4/TiN) boundaries.