硅酸盐学报

溶胶-凝胶还原氮化合成β-sialon超细粉

作者：贾晓林张海军陈俊锋杨道媛刘战杰

单位：郑州大学高温功能材料河南省重点实验室郑州大学高温功能材料河南省重点实验室郑州大学高温功能材料河南省重点实验室郑州大学高温功能材料河南省重点实验室郑州大学高温功能材料河南省重点实验室郑州450052 郑州450052 郑州450052 郑州450052 郑州450052

关键词：β-sialon 超细粉体溶胶凝胶晶种氮化

分类号：TB44

出版年,卷(期):页码：2004,32(8):925-929

DOI：

摘要：

以硝酸铝、正硅酸乙脂、无水乙醇、蔗糖等为起始原料 ,通过溶胶凝胶、还原氮化工艺制备了 β sialon超细粉体。研究了 β sialon晶种、Si3 N4 晶种、AlN晶种、添加剂、氮化温度等工艺条件对合成 β sialon粉体的影响。结果证明 :晶种的加入可以促进 β sialon的合成 ,降低其合成温度 ,其用量的多少对 β sialon的合成影响不明显 ;晶种种类对 β sialon合成影响较大 ,其中 β sialon晶种的促进效果最明显 ;1 45 0～ 15 0 0℃是比较合适的氮化温度。SEM的结果表明 ,合成的 β sialon的粒径在 30 0nm左右。同时还研究了Sialon ,Si3 N4 和AlN的水解性能。

With aluminium nitrate,silicon ethoxide,alcohol and sucrose etc. as starting materials, ultrafine βsialon powders were prepared by using solgel reductionnitridation processing. The influences of crystal seeds(βsialon, Si_(3)N_(4) and AlN), additives and nitridation temperature on the formation of βsialon were investigated. The results show that the seeding can promote the formation of βsialon and lowering the crystallization temperature. The effect of the amount of crystal seeds added on the crystallization of βsialon is insignificant, but the kind of crystal seeds (βsialon, Si_(3)N_(4) and AlN) is an important factor for βsialon formation. Among which βsialon seeds play the most effective role on the formation of βsialon. It shows that the temperature range of 1 450-1500 ℃ is a suitable nitridation temperature for βsialon preparation. The result of SEM indicates that the particle size of βsialon is about 300 nm, and the hydrolyzation of sialon, Si_(3)N_(4)and AlN are also discussed.

基金项目：

河南省高校青年骨干教师资助项目 ;; 湖北省耐火材料与高温陶瓷重点实验室省部共建国家重点实验室培育基地开放基地基金资助项目 (G0 40 7)。

作者简介：

参考文献：

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