Microstructure, strength and toughness of Si3N4-SiC whisker composites

Conference · Thu Oct 01 04:00:00 EDT 1992 · Ceramic Engineering and Science Proceedings; (United States)

OSTI ID:7039477

Champion, E; Goursat, P; Besson, J L; Madigou, V; Monthioux, M; Lespade, P

Si3N4-SiC whisker composites were fabricated using several routes (i.e., pressure filtration or CIP) followed by HP or HIP. The fracture strength ranges from 650 MPa to 750 MPa on account of the whiskers orientation. Compared to the Si3N4 matrix, the toughness is increased. A strong R-curve effect can be obtained, suggesting that, to be efficient, the whisker diameter must exceed a critical size. 13 refs.

• OSTI ID: 7039477
• Report Number(s): CONF-920144--
• Conference Information: Journal Name: Ceramic Engineering and Science Proceedings; (United States) Journal Volume: 13:9-10
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
360603 -- Materials-- Properties
CARBIDES
CARBON COMPOUNDS
COMPOSITE MATERIALS
CRACK PROPAGATION
CRYSTAL STRUCTURE
CRYSTALS
FABRICATION
FILTRATION
FRACTURE PROPERTIES
HOT PRESSING
MATERIALS
MATERIALS WORKING
MECHANICAL PROPERTIES
MICROSTRUCTURE
MONOCRYSTALS
NITRIDES
NITROGEN COMPOUNDS
ORIENTATION
PNICTIDES
PRESSING
REINFORCED MATERIALS
SEPARATION PROCESSES
SILICON CARBIDES
SILICON COMPOUNDS
SILICON NITRIDES
WHISKERS