| 氢预处理与高压影响下石墨的Raman光谱研究及在金刚石高温高压合成中的意义 |
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| 引用本文： | 杨志军,林峰,李红中,陈军,石贵勇,彭明生,苏育炜.氢预处理与高压影响下石墨的Raman光谱研究及在金刚石高温高压合成中的意义[J].珠宝科技,2007(1). |
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| 作者姓名： | 杨志军 林峰 李红中 陈军 石贵勇 彭明生 苏育炜 |
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| 作者单位： | 中山大学地球科学系 广东广州510275(杨志军，李红中，石贵勇，彭明生，苏育炜)，桂林矿产地质研究院国家特种矿物材料工程技术研究中心 广西桂林541004(林峰)，中山大学物理学系 广东广州510275(陈军) |
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| 基金项目： | 国家自然科学基金项目(编号:40502007) |
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| 摘 要： | 氢预处理及高压作用后石墨的Raman光谱的研究表明:酸浸泡及氢等离子体预处理均可以在石墨中造就有利于金刚石成核的-CH3:C-H类金刚石碳区,并使石墨的有序度显著降低;5.4GPa高压作用后,氢预处理石墨的有序度会有所提高,但不会超过常压下未经氢预处理石墨的有序度;高压下石墨向金刚石转变,石墨片层确实有褶曲,但在此之前可能存在一个石墨与氢等造就类金刚石碳区有关的必然环节。
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| 关 键 词： | 石墨 氢预处理 Raman光谱 金刚石 高压 |
Raman spectra study on graphite treated by hydrogen and high pressure and its si gnificance in the synthesis of diamond under high temperature-high pressure |
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| YANG Zhi-jun,LIN Feng,LI Hong-zhong,CHEN Jun,SHI Gui-yong,PENG Ming-sheng,SHU Yu-wei.Raman spectra study on graphite treated by hydrogen and high pressure and its si gnificance in the synthesis of diamond under high temperature-high pressure[J].Jewellery Science and Technology,2007(1). |
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| Authors: | YANG Zhi-jun LIN Feng LI Hong-zhong CHEN Jun SHI Gui-yong PENG Ming-sheng SHU Yu-wei |
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| Affiliation: | YANG Zhi-jun1,LIN Feng2,LI Hong-zhong1,CHEN Jun3,SHI Gui-yong1,PENG Ming-sheng1,SHU Yu-wei1 1.Department of Geoscience,Sun Yat-sen University,Guangzhou 510275,China,2.Guilin Research Institute of Geology for Mineral Resources,Guilin 541004,China,3.Department of Physics,Sun Yat-sen University,Guangzhou 510275,China) |
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| Abstract: | The results of Raman spectra study on graphite treated by hydrogen indicate that the acid immersion and the hydrogen plasma pretreatment of graphite may introduce diamond-like carbon areas and-CH3: C-H bonds into graphite which cause the degree of order of graphite obviously to reduce.The diamond-like carbon area is useful to diamond nucleation.After 5.4GPa high pressure function,the degree of order of graphite pretreated by hydrogen can have some enhancement,but cannot surpass the degree of order of graphite under the atmospheric pressure.This research results confirm that the laminar graphite has the fold truly during the graphite to diamond transformation under high pressure.But before then possibly may have one inevitable stage in which diamond-like carbon areas related to hydrogen etc are formed. |
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| Keywords: | graphite hydrogen pretreatment Raman diamond high pressure |
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