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Sintering Temperature Study of Hot-Pressed Y-SiAlON Ceramics

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Abstract:

In order to investigate the effect of sintering temperature on the microstructure and densification process of Y-SiAlON ceramics, by hot pressing at 1750°, 1800°, 1850° and 1900°C for 1 h, respectively, Y-α-SiAlON (m=1.2, n=1.2 according to formula Mm/3Si12-(m+n)Alm+nOnN16-n) was fabricated from α-Si3N4, AlN, Al2O3 and Y2O3 starting powers. The results showed that α-SiAlON phase is formed in all sintered specimens, and during Y-SiAlON sintering, all the samples begin to quickly shrink at 1550°C, and the shrinkage is finished at 1750°C, which indicate that 1550 ~ 1750 °C is very important for the densification process of Y-α-SiAlON ceramics, and 1750 °C is necessary for the Y-SiAlON densification. Higher sintering temperature contributes to α-SiAlON grain development and the SiAlON ceramics densification.

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Periodical:

Key Engineering Materials (Volumes 368-372)

Pages:

905-907

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.368-372.905

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Online since:

February 2008

Authors:

Ying Chun Shan, Jiu Jun Xu, Qin Ji Song, Jiang Tao Li

Keywords:

Hot-Pressing, Sintering Temperature, ß-SiAlON

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© 2008 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] H. Mandal: J. Eur. Ceram. Soc. Vol. 19(1999), p.2349.

Google Scholar

[2] V.A. Izhevskiy, L.A. Genova, J.C. Bressiani, et al.: J. Eur. Ceram. Soc. Vol. 20(2000), p.2275.

Google Scholar

[3] J.M. Min, M. Mitomo: Ceramics International Vol. 21(1995), p.427.

Google Scholar

[4] T. Ekström, M. Nygren: J. Am. Ceram. Soc. Vol. 75(1992), p.259.

Google Scholar

[5] X.L. Su, P.L. Wang, W.W. Chen, et al.: Materials Letters Vol. 58(2004), p.3340.

Google Scholar

[6] N. Camuscu, D.P. Thompson, H. Mandal: J. Eur. Ceram. Soc. Vol. 17(1997), p.599.

Google Scholar

[7] H.D. Kim, Y.J. Park, B.D. Han, et al.: Scripta Materialia Vol. 54(2006), p.615. Fig. 4 Effects of sintering temperature on relative densities.

Google Scholar