| 叶腊石微结构及其晶体结构缺陷的高分辨透射电镜分析 |
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| 引用本文： | 严俊,张俭,胡仙超,姚程,方伟,盛嘉伟.叶腊石微结构及其晶体结构缺陷的高分辨透射电镜分析[J].矿物学报,2012,32(1):65-73. |
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| 作者姓名： | 严俊 张俭 胡仙超 姚程 方伟 盛嘉伟 |
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| 作者单位： | 浙江工业大学化学工程与材料学院,浙江杭州,310014 |
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| 基金项目： | 浙江省科技厅重大主题专项项目，浙江省研究生教育创新基金 |
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| 摘 要： | 采用场发射扫描电镜（FE-SEM）、高分辨透射电镜（HRTEM）结合选区电子衍射（SAED）、X射线粉晶衍射（XRD）及X射线荧光光谱（XRF）等对浙江青田叶腊石的微结构特征进行较系统的研究。结果表明：①粉晶X射线衍射证实青田叶腊石具有典型的单斜晶系特征,该结论与叶腊石粉体选区电子衍射结果吻合,且其伴生矿为石英。②叶腊石微晶体呈＂复式板片＂构型,且＂复式＂板片中薄片厚度约为8±2 nm。③在高能电子束辐照下,叶腊石矿物颗粒形貌及晶格结构发生明显的改变,且由此产生晶格膨胀,并最终形成非晶态。
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| 关 键 词： | 叶腊石 微结构 扫描电镜 高分辨透射电镜 选区电子衍射 |
Determination of Microstructure and Defect Structure in Pyrophyllite by High-Resolution Transmission Electron Microscopy |
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| YAN Jun,ZHANG Jian,HU Xian-chao,YAO Cheng,FANG Wei,SHENG Jia-wei.Determination of Microstructure and Defect Structure in Pyrophyllite by High-Resolution Transmission Electron Microscopy[J].Acta Mineralogica Sinica,2012,32(1):65-73. |
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| Authors: | YAN Jun ZHANG Jian HU Xian-chao YAO Cheng FANG Wei SHENG Jia-wei |
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| Institution: | (College of Chemical Engineering and Materials Science,Zhejiang University of Technology,Hangzhou,Zhejiang 310014,China) |
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| Abstract: | The microstructure characterizations of pyrophyllite were investigated by using field emission scanning electron microscopy(FE-SEM),high-resolution transmission electron microscopy(HRTEM) coupled with selected area electron diffraction(SAED),X-ray diffraction(XRD) and X-ray Fluorescence(XRF).The following results are obtained:(1) Major constituents of natural mineral from Qingtian pyrophyllite deposit are pyrophyllite and quartz,and the 2M-pyrophylite is corroborated well.(2) A complex laminal structure of the micro-crystal of pyrophyllite is found,and the thickness of flake microstructure is 8±2 nm.(3) High energy electron beam irradiation induces morphology of clay mineral particles and lattice structure change,and it results in lattice dilatation and transformation from crystalline to amorphous finally. |
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| Keywords: | pyrophyllite microstructure SEM HRTEM SAED |
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