摘要：用振动磨进行了铁粉和多壁纳米碳管的混合物共同粉磨的试验研究,用XRD、Raman光谱和HRSEM对球磨不同时间的纳米碳管的形貌、结构及场发射性能进行了测定。结果表明,球磨8h后,部分纳米碳管的封闭端被打开,且被打开的封闭端的数量随球磨时间的增长而增多。场发射测定结果证明,铁微粒的存在可大大改善纳米碳管的场发射性能。

关键词：高能球磨;纳米碳管;结构;场发射;

Abstract: The effects of grinding time in a vibration mill on the morphology and the field emission property of multi-walled carbon nanotubes(MWNTs) are studied using XRD, Raman spectra, and HRSEM.The re-sults show that the closed ends of MWNTs are partly broken when groundfor four hours. The number of broken ends increases with grinding time.The field emission measurement results indicate that the presence of Feparticles can improve the property of ground MWNTs.

Key words: high-energy ball milling; carbon nanotubes; structure; field emission