Paper Title:
Sintering of Y-SiALON Ceramic
  Abstract

In this study, two different starting compositions were prepared according to two cation values, and then the mixture was compacted uniaxially in a die and the green compacts were subjected to cold isostatic pressing. They were sintered at 1700 °C and 1750 °C for 30 and 120 min under nitrogen atmosphere. The sintered compacts were analyzed for hardness, densification phase and microstructure. The compacts were analyzed using X-Ray, SEM-EDS techniques. The density of the samples was measured by the Archimedes method. The results showed that starting composition was suitable for manufacturing of Y- SiALON ceramics. The addition of Y2O3 and Al2O3 were resulted in the formation of liquid phase, but alumina was increased the hardness and densification of the compacts. It was also suggested that, for the densification of the Y-SiALON compacts at 1700 °C, is suitable. Above 1700 °C, a shorter sintering time should be used since there was weight loss in the compacts, as a result of the vaporization of nitrogen from the nitrides and oxides structures.

  Info
Periodical
Solid State Phenomena (Volumes 147-149)
Edited by
Zdzislaw Gosiewski and Zbigniew Kulesza
Pages
902-907
DOI
10.4028/www.scientific.net/SSP.147-149.902
Citation
A. Atasoy, A. Ersoy, "Sintering of Y-SiALON Ceramic", Solid State Phenomena, Vols. 147-149, pp. 902-907, 2009
Online since
January 2009
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