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Synthesis of Rod-Like α-SiAlON by Carbothermal Reduction-Nitridation

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Abstract:

Rod-like α-sialon was synthesized successfully using pure SiO2 and AlN as the starting materials, carbon black as reductant, CaF2 and Y2O3 as addition agent by carbothermal reduction-nitridation. The effects of reaction temperature (1450°C, 1500°C, 1600°C and 1700°C) and additive (Li2CO3, CaF2, Y2O3 and Y2O3+CaF2) on phases and microstructure of the final products were studied by XRD and SEM. The results showed that α-sialon was synthesized by carbothermal reduction-nitridation at 1700°C for 3 hours. The morphology of the synthesized α-sialon was rod-like.

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Periodical:

Key Engineering Materials (Volumes 368-372)

Pages:

888-890

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.368-372.888

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Online since:

February 2008

Authors:

Xian Feng Leng, Yan Gai Liu, Ming Hao Fang, Zhao Hui Huang

Keywords:

Carbothermal Nitridation, Carbothermal Reduction, Rod-Like, Synthesis Mechanism, α-Sialon

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© 2008 Trans Tech Publications Ltd. All Rights Reserved

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