Paper Title:
Sintering Temperature Study of Hot-Pressed Y-SiAlON Ceramics
  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.

  Info
Periodical
Key Engineering Materials (Volumes 368-372)
Edited by
Wei Pan and Jianghong Gong
Pages
905-907
DOI
10.4028/www.scientific.net/KEM.368-372.905
Citation
Y. C. Shan, J. J. Xu, Q. J. Song, J. T. Li, "Sintering Temperature Study of Hot-Pressed Y-SiAlON Ceramics", Key Engineering Materials, Vols. 368-372, pp. 905-907, 2008
Online since
February 2008
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Price
$32.00
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