Journal of Materials Science

, Volume 41, Issue 18, pp 5815–5819 | Cite as

Synthesis of Mg-α-sialon from the mixture of silicon, aluminum and magnesia powders in a flowing nitrogen atmosphere

  • Yawei Li
  • Shaobai SangEmail author
  • Shengli Jin
  • Chunyan Yang
  • Nan Li


Synthesis of Mg-α-Sialon has been investigated by the mixture of silicon, aluminum and magnesia powders in a flowing nitrogen atmosphere in the range of 1300–1600 °C, when Mg-α-Sialon is designed with a chemical formulation of MgxSi12−3xAl3xOxN16−x in present work. The results showed that Mg-α-sialon initially occurred at 1400 °C and basically increased with elevated temperatures. For the samples of = 0.6, 0.8 and 1.0 the products mainly consisted of Mg-α-Sialon with small amounts of Si, AlN and 21R AlN-polytypoid phases at 1600° C. However, in final products of = 1.2, 1.4 and 1.6 only a little of Mg-α-Sialon formed and a great amount of Si remained in these samples at all the fired temperatures. Fortunately, the content of Mg-α-Sialon in these samples were obviously increased by adding a small amount of α-Si3N4 as seeds before nitridation.


Carbothermal Reduction Sialon Transient Liquid Phase Nitridation Process Magnesia Powder 



This research work was financially supported by the Educational Department of Hubei Province.


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Copyright information

© Springer Science+Business Media, LLC 2006

Authors and Affiliations

  • Yawei Li
    • 1
  • Shaobai Sang
    • 1
    Email author
  • Shengli Jin
    • 1
  • Chunyan Yang
    • 1
  • Nan Li
    • 1
  1. 1.Hubei Province Key Laboratory of Ceramics and RefractoriesWuhan University of Science and TechnologyWuhanP. R. China

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