TY - JOUR
T1 - Effect of oxynitride grain boundary phase on toughening of silicon nitride ceramics
AU - Kusunose, T.
AU - Sekino, T.
AU - Mogan, P. E.D.
AU - Niihara, K.
PY - 2006
Y1 - 2006
N2 - The Si3N4/YSiO2N composite in which crystalline YSiO2N was formed as grain boundary phase was fabricated by hot-pressing the mixture of SiO2, Si3N4 and Y2O3. The fracture toughness of this composite was significantly improved, compared to the Si3N4 composites containing Y5Si3O12N or Y2Si 3O3N4 as a grain boundary phases. To clarify the toughening mechanism, the microstructure and the crack propagation profiles were observed.
AB - The Si3N4/YSiO2N composite in which crystalline YSiO2N was formed as grain boundary phase was fabricated by hot-pressing the mixture of SiO2, Si3N4 and Y2O3. The fracture toughness of this composite was significantly improved, compared to the Si3N4 composites containing Y5Si3O12N or Y2Si 3O3N4 as a grain boundary phases. To clarify the toughening mechanism, the microstructure and the crack propagation profiles were observed.
UR - http://www.scopus.com/inward/record.url?scp=33746069271&partnerID=8YFLogxK
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U2 - 10.4028/www.scientific.net/kem.317-318.649
DO - 10.4028/www.scientific.net/kem.317-318.649
M3 - Article
AN - SCOPUS:33746069271
VL - 317-318
SP - 649
EP - 652
JO - Key Engineering Materials
JF - Key Engineering Materials
SN - 1013-9826
ER -