Superplastic Deformation of Nano-Sized α-Sialon Ceramics

Abstract:

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In previous report, we succeeded in preparing dense nano-sized ceramics with the composition of Y- α-sialon (m=1.35, n=0.675) by high-energy mechanical milling followed by spark plasma sintering. The superplastic deformation of the obtained nano-ceramics was studied in this report. A good ductility of the nano-sized ceramics has been confirmed, which arised from the nano-sized grains and large amount of transient liquid phase. The effects of deformation on the phase and microstructural evolution were also studied. The nano-sized grains promoted the formation of elongated α-sialon grains during post-annealing at 1850oC for 3 h, which would strengthen and toughen the deformed ceramics.

Info:

Periodical:

Key Engineering Materials (Volumes 336-338)

Edited by:

Wei Pan and Jianghong Gong

Pages:

1001-1004

DOI:

10.4028/www.scientific.net/KEM.336-338.1001

Citation:

X. Xu et al., "Superplastic Deformation of Nano-Sized α-Sialon Ceramics", Key Engineering Materials, Vols. 336-338, pp. 1001-1004, 2007

Online since:

April 2007

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$35.00

[1] G.Z. Cao and R. Metselaar: Chem. Mater. Vol. 3 (1991), p.242.

[2] S.L. Hwang, H.T. Lin, P.F. Becher: J. Mater. Sci. Vol. 30 (1995), p.6023.

[3] L.O. Nordberg and T. Ekstrom: J. Am. Ceram. Soc. Vol. 78 (1995), p.797.

[4] I.W. Chen and A. Rosenflanz: Nature Vol. 389 (1997), p.701.

[5] S. Kurama, M. Herrmann and H. Mandal: J. Eur. Ceram. Soc. Vol. 22 (2002), p.109.

[6] X. Xu, J. M. F. Ferreira: J. Am. Ceram. Soc. Vol. 88 (2005), p.593.

[7] X. Xu, M.I.L.L. Oliveira, R.L. Fu, J. M. F. Ferreira: J. Eur. Ceram. Soc. Vol. 23 (2003), p.1525.

[8] X. Xu, S. Mei, J.M.F. Ferreira: J. Mater. Res. Vol. 18 (2003), p.1363.

[9] I.W. Chen and L.A. Xue, J. Am. Ceram. Soc., Vol. 73 (1990), p.2585.

[10] X. Xu, T. Nishimura, N. Hirosaki, R. -J. Xie, Y. Yamamoto, and H. Tanaka, Key Eng. Mater., in press.

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