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脉冲激光诱导液-固界面反应合成金刚石纳米晶中的结构相变模型
引用本文:王金斌,杨国伟.脉冲激光诱导液-固界面反应合成金刚石纳米晶中的结构相变模型[J].高压物理学报,1999,13(2):147-151.
作者姓名:王金斌  杨国伟
作者单位:湘潭大学现代物理研究所,湘潭,411105
基金项目:湖南省中青年科技基金,湖南省自然科学基金,湖南省教委科学基金
摘    要: 探讨了脉冲激光诱导液-固界面反应法(PLIR: Pulsed-Iaser Induced Liquid-Solid Interface Reaction )制备金刚石纳米晶的物理化学机制,提出了金刚石纳米晶的成核机理,即由激光诱导石墨六方结构原子团过渡到石墨菱方结构、然后转变成立方金刚石晶核,以及由石墨六方结构直接转变成六方金刚石结构的相变模型,并讨论了基于液-固界面反应的纳米晶生长动力学,较好地从动力学上解释了合成金刚石纳米晶的物理化学机制。

关 键 词:六方石墨  菱方石墨  六方金刚石  立方金刚石
收稿时间:1998-08-20;

MODEL OF STRUCTURAL TRANSFORMATION IN SYNTHESIZING NANO-CRYSTALLINE DIAMOND WITH PULSED-LASER INDUCED LIQUID-SOLID INTERFACE REACTION
Wang Jinbin,Yang Guowei.MODEL OF STRUCTURAL TRANSFORMATION IN SYNTHESIZING NANO-CRYSTALLINE DIAMOND WITH PULSED-LASER INDUCED LIQUID-SOLID INTERFACE REACTION[J].Chinese Journal of High Pressure Physics,1999,13(2):147-151.
Authors:Wang Jinbin  Yang Guowei
Institution:Institute of Modern Physics of Xiangtan University, Xiangtan 411105, China
Abstract:The physical and chemical mechanisms of synthesizing diamond nanocrystallites with pulsed laser induced liquid solid interface reacion (PLIIR) have been analyzed in this paper.At the initial stage of nano crystalline diamond growth,the models of structural transformation from hexagonal to rhombohedral graphite at first and then to cubic diamond crystal nuclear,or from hexagonal graphite direct to cubic diamond have been developed.These models reasonably explain the physical and chemical mechanisms of synthesizing diamond nanocrystallites with pulsed laser induced liquid solid interface reaction from a kinetic view.
Keywords:hexagonal  graphite  rhombohedral  graphite  hexagonal  diamond  cubic  diamond  
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