Plastic Deformation of Silicon Nitride Nano-Ceramics


Article Preview

A commercial silicon nitride powder with sintering additives was ground by high-energy milling to reduce particle size. Nanometer sized powder was obtained. The powder was densified for short time by spark plasma sintering to prevent grain growth. Nanometer-grained Si3N4 ceramics were obtained. Plastic deformation of the Si3N4 nano-ceramics has been studied in compression over a wide range of strain rates and temperatures. The experimental results revealed that a transition in stress exponent, n, at each temperature. The n value decreased from ~ 2 to ~ 1 with increasing applied stress. Activation energy was also different for the two regions, decreasing from 858.2 kJ/mol in the n ~ 2 region to 571.8 kJ/mol in the n ~ 1 region. Effect of sintering additives on plastic deformation was also discussed.



Edited by:

Katsutoshi Komeya, Yohtaro Matsuo and Takashi Goto




T. Nishimura et al., "Plastic Deformation of Silicon Nitride Nano-Ceramics", Key Engineering Materials, Vol. 352, pp. 189-192, 2007

Online since:

August 2007




[1] J. -G. Wang and R. Raj: J. Am. Ceram. Soc. vol. 67 (1984), p.399.

[2] F. Wakai, Y. Kodama, S. Sakaguchi, N. Murayama, K. Izaki and K. Niihara: Nature vol. 344 (1990), p.421.

[3] M. Mitomo, H. Hirotsuru, H. Suematsu and T. Nishimura: J. Am. Ceram. Soc. vol. 78 (1995), p.211.

[4] G. Zhan, M. Mitomo, T. Nishimura, R. Xie, T. Sakuma and Y. Ikuhara: J. Am. Ceram. Soc., vol. 83 (2000), 841.

[5] G. Zhan, M. Mitomo, R. Xie and K. Kurashima: Acta Materialia vol. 48 (2000), p.2373.

[6] X. Xu, T. Nishimura, N. Hirosaki, R. Xie, Y. Zhu, Y. Yamamoto, and H. Tanaka: J. Am. Ceram. Soc. vol. 88 (2005), p.934.

[7] X. Xu, T. Nishimura, N. Hirosaki, R. Xie, Y. Yamamoto, and H. Tanaka: Acta Materialia vol. 54 (2006), p.255.

[8] P. Burger, R. Duclos and J. Crampon: Mater. Sci Eng A vol. 222 (1997), p.175.

[9] J. A. Todd Z. Y. Xu: J. Mater Sci. vol. 24 (1989), p.4443.

[10] J. Crampon, R. Duclos: J. Am. Ceram. Soc. vol. 80 (1997), p.85.

[11] G. E. Gazza: J. Am. Ceram. Soc. vol. 56, (1973), p.662.

[12] T. Nishimura, M. Mitomo and H. Emoto, in: Precursor-Derived Ceramics, edited by J. Bill, F. Wakai and F. Aldinger WILEY-VCH, Weinheim, Germany (1999), p.280.

[13] X. Xu, T. Nishimura, N. Hirosaki, R. Xie, Y. Yamamoto and H. Tanaka: J. Am. Ceram. Soc. vol. 89 (2006), p.1745.

[14] F. Wakai: Acta Metall. Mater. vol. 42 (1994), p.1163.

Fetching data from Crossref.
This may take some time to load.