Paper Titles
Fabrication and Properties of the Tape-Cast Si3N4 with Rod-Like Si3N4 Seed Addition
p.1219
Preparation and Characterization of Rod-Like β-Si3N4 Seeds
p.1223
Production of Si3N4 Whiskers in Solid Mixtures through Vapor-Solid Mechanism Using 2MgO 2Al2O3 5SiO2 as Sintering Additives
p.1227
Effects of Pore Morphology on the Fabrication and Mechanical Properties of Porous Si3N4 Ceramics
p.1231
Effects of Technical Parameters on the Phase Composition and Microstructure of Yb α-SiAlON Prepared by Combustion Synthesis
p.1237
Combustion Synthesis of β-SiAlON Whiskers
p.1241
Preparation of β-SiAlON Powder at Low Temperature
p.1245
Superplastic Forming of Silicon Nitride at Low Temperature
p.1249
Effect of Microstructure on Sliding Wear of Ca α-SiAlON Ceramics
p.1253

Effects of Technical Parameters on the Phase Composition and Microstructure of Yb α-SiAlON Prepared by Combustion Synthesis

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Abstract:

In this paper, Yb a-sialon powders with elongated grains have been prepared by combustion synthesis. The effects of diluents, nitrogen pressure, adding a-sialon seeds and NH4F on the phase transformation and microstructure development of the samples are discussed systematically. The experimental results show that the addition of diluents, proper nitrogen pressure and additive NH4F can facilitate the nitridation of Si. It was also found that the added a-sialon seeds and NH4F are beneficial to the nucleation and growth of elongated grains.

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Info:

Periodical:

Key Engineering Materials (Volumes 280-283)

Pages:

1237-1240

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.280-283.1237

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Cite this paper

Online since:

February 2007

Authors:

G.H. Liu, Ke Xin Chen, He Ping Zhou, Xiao Shan Ning, José Maria F. Ferreira

Keywords:

Combustion Synthesis (CS), Elongated Grains, Yb α-SiAlON

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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