Effect of Oxynitride Grain Boundary Phase on Toughening of Silicon Nitride Ceramics

Abstract:

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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 et al., "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:

$35.00

[1] A. Tsuge, K. Nishida and M. Komatsu: J. Am. Ceram. Soc., Vol. 58 (1975), p.323.

[2] F. F. Lange: J. Am. Ceram. Soc. Bull., Vol. 62 (1983), p.1369.

[3] D. R. Clarke, F. F. Lange and G. D. Schnittgrund: J. Am. Ceram. Soc., Vol. 65 (1982), p. C-51.

[4] H. Park, H. -E. Kim and K. Niihara: J. Am. Ceram. Soc., Vol. 80 (1997), p.750.

[5] F. F. Lange, S. C. Snghal and R. C. Kuznicki: J. Am. Ceram. Soc., Vol. 60 (1977), p.249.

[6] M. Y. He and J. W. Hutchinson, J. Appl. Mech., Vol. 56 (1989), p.270.

[7] A. G. Evans and M. Y. He: J. Am. Ceram. Soc., Vol. 72 (1989), p.2300.

[8] I. M. Perterson and T. -Y. Tien: J. Am. Ceram. Soc., Vol. 78 (1995), p.2345.

[9] P. F. Becher, E. Y. Sun, C. H. Hsueh, K. B. Alexander, S. -L. Hwang, S. B. Waters, and C. G. Westmoreland: Acta Mater., Vol. 44 (1996), p.3881.

[10] M. K. Cinibuk, G. Thomas and S. M. Johnson: J. Am. Ceram. Soc., Vol. 73 (1990), p.1606.

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