Preparation of β-Sialon from Fly Ash by Carbothermal Reduction-Nitridation Reaction

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Single phase Sialon was synthesized successfully from fly ash by carbothermal reductionnitridation reaction in this paper. The effects of synthesizing temperature (1200°C, 1300°C, 1400°C and 1450°C) and carbon content (stoichiometric content, exceeding 10%, 50% and 100%) on the final production were studied by XRD and SEM. Synthesis mechanism of β-Sialon was also analysized. The results indicated that single phase β-Sialon with z=3 was obtained using fly ash as raw materials and carbon black of stoichiometric content as reducer by carbothermal reduction- nitridation reaction in flow nitrogen at 1450°C for 3h. Temperature and content of carbon had significant effect on the synthesis of β-Sialon.

Info:

Periodical:

Key Engineering Materials (Volumes 368-372)

Edited by:

Wei Pan and Jianghong Gong

Pages:

910-912

Citation:

J. T. Huang et al., "Preparation of β-Sialon from Fly Ash by Carbothermal Reduction-Nitridation Reaction", Key Engineering Materials, Vols. 368-372, pp. 910-912, 2008

Online since:

February 2008

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$38.00

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