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首页> 外文期刊>Journal of Crystal Growth >Growth of diamond from fullerene C60 by spark plasma sintering
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Growth of diamond from fullerene C60 by spark plasma sintering

机译：火花等离子体烧结从富勒烯C60中生长金刚石

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摘要

The growth of diamond from fullerene C60 was studied by spark plasma sintering (SPS). The phases and microstructures were analyzed by Raman spectroscopy, Synchrotron X-ray, scanning electron microscopy and transmission electron microscopy. Experimental results show that C60 becomes unstable and can be directly transformed into diamond by SPS under a pressure of 50 MPa at temperatures above 1150℃, without any catalyst being involved. Polycrystalline diamond crystals with sizes up to 250 urn and transition rate about 30 vol% are obtained at SPS temperature of 1300℃. The mechanism indicates that the high fraction of sp~3 hybrids in the fullerene C60 and the generated plasmas in the SPS lead to its transformation into diamond at such low temperatures and pressures. The transformation from C60 to diamond is a direct transition process with a structural reconstruction of carbon atoms without intermediate phases being involved.
机译：通过火花等离子体烧结（SPS）研究了富勒烯C60中金刚石的生长。通过拉曼光谱，同步X射线，扫描电子显微镜和透射电子显微镜分析相和微观结构。实验结果表明，C60变得不稳定，在1150℃以上的温度，50 MPa的压力下，可以通过SPS直接转化为金刚石。在1300℃的SPS温度下可获得尺寸最大为250 um的多晶金刚石晶体，其转变率约为30 vol％。该机理表明，在如此低的温度和压力下，富勒烯C60中高比例的sp〜3杂化物和SPS中产生的等离子体导致其转变为金刚石。从C60到金刚石的转变是一种直接过渡过程，具有碳原子的结构重建，而没有中间相的参与。

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  • 来源
    《Journal of Crystal Growth》 |2012年第1期|p.1-5|共5页
  • 作者

    Faming Zhang; Furqan Ahmed; Gerd Holzhueter; Eberhard Burkel;

  • 作者单位

    Institute of Physics, University of Rostock, August Bebel Strasse 55, Rostock 18055, Germany;

    Department of Materials Science and Engineering, University of Eriangen-Nuernberg, Martens Strasse 5, Erlangen 91058, Germany,Department of Metallurgical and Materials Engineering, University of Engineering and Technology, Lahore, Pakistan;

    Institute of Physics, University of Rostock, August Bebel Strasse 55, Rostock 18055, Germany;

    Institute of Physics, University of Rostock, August Bebel Strasse 55, Rostock 18055, Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    A1. X-ray diffraction; A2. bulk crystal growth; B1. diamond; B1. fullerenes;

    机译：A1。 X射线衍射;A2。大块晶体生长;B1。钻石;B1。富勒烯;

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