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High-strength porous silicon nitride fabricated by the sinter-forging technique

Published online by Cambridge University Press:  31 January 2011

Naoki Kondo ,
Yoshikazu Suzuki  and
Tatsuki Ohji
Naoki Kondo*
Affiliation:
National Industrial Research Institute of Nagoya, Shimo-shidami 2268-1, Moriyama-ku, Nagoya, 463-8687, Japan
Yoshikazu Suzuki
Affiliation:
National Industrial Research Institute of Nagoya, Shimo-shidami 2268-1, Moriyama-ku, Nagoya, 463-8687, Japan
Tatsuki Ohji
Affiliation:
National Industrial Research Institute of Nagoya, Shimo-shidami 2268-1, Moriyama-ku, Nagoya, 463-8687, Japan
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Porous silicon nitride with aligned fibrous grains was fabricated by sinter-forging technique, where uniaxial pressure was applied to achieve a specific density after soaking at elevated temperatures. Fibrous silicon nitride grains were formed during the soaking, and the grains were aligned by the subsequent forging. As the result, a specimen with strongly aligned fibrous silicon nitride grains was successfully fabricated. The specimen with a relative density of 76% exhibited high bending strength of 778 MPa.

Type
Articles
Information
Journal of Materials Research , Volume 16 , Issue 1 , January 2001 , pp. 32 - 34
Copyright
Copyright © Materials Research Society 2001

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References

REFERENCES

1.Shigegaki, Y., Brito, M.E., Hirao, K., Toriyama, M., and Kanzaki, S., J. Am. Ceram. Soc. 80, 495 (1997).CrossRefGoogle Scholar
2.Inagaki, Y., Ohji, T., Kanzaki, S., and Shigegaki, Y., J. Am. Ceram. Soc. 83, 1807 (2000).CrossRefGoogle Scholar
3.Kawai, C. and Yamakawa, A., J. Am. Ceram. Soc. 80, 2705 (1997).CrossRefGoogle Scholar
4.Kondo, N., Suzuki, Y., and Ohji, T., J. Am. Ceram. Soc. 82, 1067 (1999).CrossRefGoogle Scholar
5.Kitayama, M., Hirao, K., Toriyama, M., and Kanzaki, S., Acta Mater. 46, 6551 (1998).CrossRefGoogle Scholar
6.Kondo, N., Sato, E., and Wakai, F., J. Am. Ceram. Soc. 81, 3221 (1998).CrossRefGoogle Scholar
7.Kondo, N., Ohji, T., and Wakai, F., J. Am. Ceram. Soc. 81, 713 (1998).CrossRefGoogle Scholar
8.Hay, J.C., Sun, E.Y., Pharr, G.M., Becher, P.F., and Alexander, K.B., J. Am. Ceram. Soc. 81, 2661 (1998).CrossRefGoogle Scholar
9.Becher, P.F., J. Am. Ceram. Soc. 74, 255 (1991).CrossRefGoogle Scholar
10.Becher, P.F., Hwang, S.L., Lin, H.T., and Tiegs, T.N., Tailoring of Mechanical Properties of Si3N4 Ceramics, NATO ASI Series, Series E, Applied Sciences, Vol. 276, edited by Hoffmann, M.J. and Petzow, G. (Kluwer Academic Publishers, Dordrecht, The Netherlands, 1993), pp. 87–100.Google Scholar
11.Ohji, T., Hirao, K., and Kanzaki, S., J. Am. Ceram. Soc., 78, 3125 (1995).CrossRefGoogle Scholar
12.Kondo, N., Inagaki, Y., Suzuki, Y., and Ohji, T., High-Temperature Fracture Energy of Superplastically-Forged Silicon Nitrade (unpublished).Google Scholar
13.Imuta, M., Gotoh, J., Nakayama, H., and Wakai, F., Trans. Mater. Res. Soc. Jpn. 16B, 1053 (1994).Google Scholar