JOURNAL ARTICLE
Effect of Oxynitride Grain Boundary Phase on Toughening of Silicon Nitride Ceramics
Takafumi KusunoseTohru SekinoP.E.D. MoganKoichi Niihara
Year: 2006 Journal: Key engineering materials Vol: 317-318 Pages: 649-652 Publisher: Trans Tech Publications
Abstract
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.
Keywords:
Materials science Toughening Silicon nitride Grain boundary Microstructure Composite material Hot pressing Fracture toughness Composite number Ceramic Phase (matter) Nitride Phase boundary Toughness Layer (electronics)
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Citation History
Topics
Advanced ceramic materials synthesis
Physical Sciences → Materials Science → Ceramics and Composites
Advanced materials and composites
Physical Sciences → Engineering → Mechanical Engineering
Metal and Thin Film Mechanics
Physical Sciences → Engineering → Mechanics of Materials
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