Effect of Oxynitride Grain Boundary Phase on Toughening of Silicon Nitride Ceramics
2006 ◽
Vol 317-318
◽
pp. 649-652
◽
Keyword(s):
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 Y2Si3O3N4 as a grain boundary phases. To clarify the toughening mechanism, the microstructure and the crack propagation profiles were observed.
Keyword(s):
2003 ◽
Vol 18
(12)
◽
pp. 2752-2755
◽
Microstructure and microanalysis of silicon nitride ceramics in the Y-Si-Al-O-N and Y-Si-O-N systems
1990 ◽
Vol 48
(4)
◽
pp. 1072-1073
2005 ◽
pp. 421-426
◽
Keyword(s):
2005 ◽
Vol 287
◽
pp. 421-426
◽
Keyword(s):
1993 ◽
Vol 89-91
◽
pp. 361-366
◽
1975 ◽
Vol 33
◽
pp. 60-61