(武汉工业大学生物材料与工程研究中心， 武汉 430070)
摘 要: 以高岭土为原料， CaF2 和Na2 CO3为添加剂， 在 1400℃保温4h, 通过碳热还原氮化法合成了β′-Sialon粉末。 XRD、 SEM、 XPS等测试手段对合成产物的测试结果表 明：控制适当的C含量不仅可以合成质量较好的β′-Sialon(Z=3),而且可以 避免产物 中生成FeSix 。 详细地讨论了CaF2和Na2CO3添加剂及其它工艺因素对合成 Sialon的影响与作用， 并探讨了β′-Sialon的形成过程。
关键字: β′-Sialon 碳热还原氮化 高岭土
（Biomedical Material and Engineering Research Centre,Wuhan University of Technology, Wuhan 430070, P. R. China）
Abstract:β' -Sialon was synthesized by adding CaF2 and Na2CO3 additives in the condition of 1400℃ and holding 4h through the carbothermal reduction-nitridation of kaolinite. The products were analysed by XRD, XPS, SEM techniques. It was shown that not only high quality β'-Sialon with Z=3 can be synthesized by controlling appropriate carbon content,but also the formation of FeSix phase in the products can be avoided. The effect of CaF2 and Na2CO3 additives as well as t he reaction conditions on the synthesis of Sialon were investigated. The formation of β'-Sialon were also discussed in detail.
Key words: β'-Sialon carbothermal reductionnitridation kaolinite
