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等离子体诱导碳纳米管到纳米金刚石的相变

孙立涛 巩金龙 朱志远 朱德彰 何绥霞 王震遐

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等离子体诱导碳纳米管到纳米金刚石的相变

孙立涛, 巩金龙, 朱志远, 朱德彰, 何绥霞, 王震遐

Plasma-induced transformation of carbon nanotubes to nanocrystalline diamond

Sun Li-Tao, Gong Jin-Long, Zhu Zhi-Yuan, Zhu De-Zhang, He Sui-Xia, Wang Zhen-Xia
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  • 采用氢等离子体,实现了碳纳米管向金刚石的结构相变,并实现了金刚石的高密度成核,有效成核密度可达10\+\{11\}/cm\+2以上,处于目前金刚石成核密度的最高行列,为制备优质的金刚石薄膜提供了保证.高分辨透射电镜、x射线衍射和拉曼光谱都证实了金刚石的形成.同时,对纳米金刚石晶粒的生成机理进行了初步探讨.
    Structural phase transformation from multiwalled carbon nanotubes to nanocr ystalline diamond by hydrogen plasma posttreatment was carried out. Ultrahigh equivalent diamond nucleation density above 1011 nuclei/cm2 was easily obtained . The diamond formation and growth mechanism was proposed to be the consequence of the formation of sp3 bonded amorphous carbon clusters. The hydrogen chemi so rption on curved graphite network and the energy deposited on the carbon nanotu bes by continuous impingement of activated molecular or atomic hydrogen are resp onsible for the formation of amorphous carbon matrix. The diamond nucleates and grows in the way similar to that of diamond CVD processes on amorphous carbon films. The present method of hydrogen treatment provides a controllable way for the CVD of high quality diamond films.
    • 基金项目: 中国科学院知识创新工程重要方向项目(批准号:KJCX2_SW_N02)、国家自然科学基金(批准 号:10375085)及上海市纳米专项(批准号:0352nm050)资助的课题
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  • 文章访问数:  6670
  • PDF下载量:  896
  • 被引次数: 0
出版历程
  • 收稿日期:  2004-04-07
  • 修回日期:  2004-07-06
  • 刊出日期:  2004-05-05

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