金刚石中氢的研究及其意义

doi:10.11867/j.issn.1001-8166.2002.01.0091

地球科学进展 ›› 2002, Vol. 17 ›› Issue (1): 91 -95. doi: 10.11867/j.issn.1001-8166.2002.01.0091

金刚石中氢的研究及其意义

杨志军 ^1，2，彭明生 ²，苑执中 ²

1.中国科学院广州地球化学研究所，广东广州 510640；2.中山大学地球科学系，广东广州 510275

收稿日期:2001-03-26 修回日期:2001-06-14 出版日期:2002-12-20
通讯作者: 杨志军（1971-），男，江西临川人，博士生，主要从事矿物材料与矿物物理方面的研究.E-mail：yzjdoctor@163.net E-mail:yzjdoctor@163.net
基金资助:
广东省自然科学基金项目“金刚石中氢的赋存状态及其应用研究”（编号：980269）资助.

THE RESEARCH OF HYDROGEN IN DIAMOND AND ITS SIGNIFICANCE

YANG Zhijun ^1,2， PENG Mingsheng ²， YUAN Zhizhong ²

1.Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640，China；2.Department of Geoscience, Zhongshan University, Guangzhou 510275, China

Received:2001-03-26 Revised:2001-06-14 Online:2002-12-20 Published:2002-02-01

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含氢对于天然与高温高压合成金刚石体内而言是固有的，但是对CVD金刚石来说并非固有。氢可以稳定存在于晶格位、键心、反键心及四面体空隙等金刚石的结构属性中，也可以存在于显微流体包裹体中。即便是在 1473K下淬火，氢在金刚石中也并不发生迁移或扩散，表明氢在金刚石结构中是自陷的。金刚石中的氢的研究对于地幔矿物学及材料科学等均有重要理论意义和实际意义。

关键词: 金刚石, 氢, 自陷

Hydrogen is an essential impurity in diamond. The tendency of hydrogen concentration shows hydrogen in the bulk is intrinsic to natural and HPHT synthetic diamond, but not to CVD synthetic diamond. The result of modern measure technology (vibration spectroscopy) measurement has proved that the chemical states of hydrogen include C－H bond, H₂O, hydrogen molecule, －OH and N－H bond in the bulk of diamond. In addition, The research of micro-inclusions of diamond implies HF and H⁺will be other chemical states of hydrogen. The research of location which hydrogen stays in diamond structure has concluded that hydrogen is firmly fixed in diamond in the form of lattice site, bond-centered site, anti-bond centered site and tetrahedral interstitial site, also anchored in the micro-inclusions of diamond in the form of H₂O and CH₄ etc.The sequence of stabilization is C-H bond> anti-bond centered site> bond-centered site > tetrahedral site. The research of dynamic mechanism of hydrogen suggest that Annealing the diamond up to 1473K produces no evidence whatsoever of any movement of the implanted hydrogen, so we forced to conclude that the hydrogen is self-trapping in the bulk of diamond. The nuclear probes technology (especially ERDA) is l immediate and sensitive in the study of the hydrogen concentration in diamond and the vibration spectroscopy (especially FTIR) is effective in the study of chemical states of hydrogen. The research of hydrogen in diamond has promoted the development in the mantle's mineralogy, material sciences and gemology etc.

Key words: Diamond, Hydrogen, Self-trapping.

中图分类号:

P619．24＋1

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