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中文摘要：
通过简单化学气相反应法，在1300℃下合成出大量SiC纳米棒产物，着重研究了Fe催化条件下该SiC纳米棒的生长机制。采用数码相机、立式显微镜、场发射扫描电镜、能谱分析仪、透射电镜、选区电子衍射仪、高分辨透射电镜及X射线粉末衍射仪对产物的宏观产量、微观形貌、化学成分及晶体结构进行了表征。结果表明，石墨基片上生成1层较厚的浅蓝色产物，产量达克量级，产物由均匀的纳米棒组成，直径约100nm，长达几微米，具有立方β-SiC晶体结构。基于FpC—Si三元舍金相变原理及传统的VLS机制，首次提出一种周期性的气一液一固（Periodic—VLS）生长模型对SiC纳米棒的形成过程进行了详细讨论。
英文摘要：
Preport the large-scale synthesis of β-SiC nanorods by simple chemical vapor reaction at 1300℃, the periodic VLS mechanism under Fe-assisted condition was studied. The achieved products were characterized by digital camera, microscope, field-emission scanning electron microscopy, transmission electron microscopy, high-resolution transmission electron microscopy and X-ray diffraction. The results indicated that mass blue products had been obtained on the graphite substrate; the yield was up to gram scale. The diameters of the nanorods were about 100nm and lengths were approximate several microns, they were composed of β-SiC single crystals. Based on the Si-C-Fe alloy system, we supposed a periodic V-L-S growth process for the growth of SiC nanorods.
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