Paper Title:
Effect of Oxynitride Grain Boundary Phase on Toughening of Silicon Nitride Ceramics
  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.

  Info
Periodical
Key Engineering Materials (Volumes 317-318)
Edited by
T. Ohji, T. Sekino and K. Niihara
Pages
649-652
DOI
10.4028/www.scientific.net/KEM.317-318.649
Citation
T. Kusunose, T. Sekino, P.E.D. Mogan, K. Niihara, "Effect of Oxynitride Grain Boundary Phase on Toughening of Silicon Nitride Ceramics", Key Engineering Materials, Vols. 317-318, pp. 649-652, 2006
Online since
August 2006
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Price
$32.00
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