碳化硅纳米纤维的溶胶-凝胶法合成

功能材料, 2004, 35(z1): 2856-2858.

1.中国科学院山西煤炭化学研究所,煤转化国家重点实验室,山西,太原,030001

2.中国科学院山西煤炭化学研究所,煤转化国家重点实验室,山西,太原,030001

基金项目: 中国科学院"百人计划"

Synthesis of SiC nanofibers by sol-gel route

以酚醛树脂和正硅酸乙酯为碳源和硅源,硝酸镧作为生长助剂,通过溶胶-凝胶和碳热还原制备了碳化硅纳米纤维.采用X射线衍射、扫描电子显微镜和透射电子显微镜对所制备的碳化硅纳米纤维进行表征.结果表明,通过此方法所制备的碳化硅纳米纤维的长度可达100μm以上,直径为40～50nm,反应遵循V-L-S机理.

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