| 添加剂对稻壳合成SiC的影响 |
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| 引用本文： | 郭伟,孙建,周杰,孙海峰,姚立春.添加剂对稻壳合成SiC的影响[J].盐城工学院学报(自然科学版),2012,25(1):1-5. |
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| 作者姓名： | 郭伟 孙建 周杰 孙海峰 姚立春 |
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| 作者单位： | 盐城工学院材料工程学院,江苏盐城,224051 |
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| 基金项目： | 江苏省科技厅自然科学基金项目（BK2009671）; 江苏省新型环保重点实验室开放基金项目（AE201012） |
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| 摘 要： | 以稻壳作为硅源和碳源,不同掺量的Al2O3、Nd2O3、CeO2等作为添加剂,用碳热还原法在1 500℃条件下成功合成了SiC。利用XRD分析了试样在烧成过程中的物相变化,用SEM观察了试样的显微结构。结果表明,当无添加剂时,稻壳在1 550℃下仅能形成少量SiC,掺入Al2O3、Nd2O3、CeO2,均能促进SiC的形成。其中,掺3.5%Al2O3于1 500℃下烧成试样的SiC合成率最高,达到89.12%。
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| 关 键 词： | 稻壳 SiC Al2O3 添加剂 |
Effect of Admixtures on Synthesis of Silicon Carbide |
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| GUO Wei,SUN Jian,ZHOU Jie,SUN Hai-feng,YAO Li-chun.Effect of Admixtures on Synthesis of Silicon Carbide[J].Journal of Yancheng Institute of Technology(Natural Science Edition),2012,25(1):1-5. |
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| Authors: | GUO Wei SUN Jian ZHOU Jie SUN Hai-feng YAO Li-chun |
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| Institution: | (Department of Material Engineering,Yancheng Institute of Technology,Yancheng Jiangsu 224051,China) |
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| Abstract: | SiC was prepared at 1 500 ℃ by carbothermic reaction using the rice husk as silica source and carbon source,and Al2O3,Nd2O3,CeO2 as additives.The mineral phase changes during sintering were analyzed by X-ray diffraction（XRD）,then the microstructures of the sintered samples were observed by scanning electronic microscopy（SEM）.The results showed that the SiO2 and C in rice husk could react to form a little of SiC at 1 550 ℃,and doped Al2O3、Nd2O3、CeO2additives all can promote the formation of SiC of samples.Among several additives,the SiC product rate of the sampale doped 3.5% Al2O3 is up to 89.12%. |
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| Keywords: | rice husk SiC Al2O3 additives |
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