Preparation of β-Sialon from Fly Ash by Carbothermal Reduction-Nitridation Reaction
Single phase Sialon was synthesized successfully from fly ash by carbothermal reductionnitridation reaction in this paper.The effects of synthesizing temperature (1200℃,1300℃,1400℃ and 1450℃) 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℃ for 3h.Temperature and content of carbon had significant effect on the synthesis of β-Sialon.
β-Sialon fly ash preparation carbothermal reduction-nitridation
Juntong Huang Minghao Fang Yangai Liu Zhaohui Huang
National Laboratory of Mineral Materials,China University of Geosciences Beijing,Beijing 100083,China
国际会议
The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))
长沙
英文
910-912
2007-05-10（万方平台首次上网日期，不代表论文的发表时间）