| SiO2包覆纳米CaCO3的透射电镜表征 |
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| 引用本文： | 施用晞,邵磊,陈建峰.SiO2包覆纳米CaCO3的透射电镜表征[J].分析测试学报,2006,25(3):103-105. |
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| 作者姓名： | 施用晞 邵磊 陈建峰 |
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| 作者单位： | 1. 北京化工大学,分析测试中心,北京,100029
2. 北京化工大学,纳米材料先进制备技术与应用科学教育部重点实验室,北京,100029 |
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| 摘 要： | 在透射电子显微镜（TEM）电子衍射模式下，用适当孔径的物镜光阑选择非晶态SiO2的衍射区域，拍摄以溶胶一凝胶法制备的SiO2包覆纳米CaCO3的暗场像。与未经包覆SiO2的纳米CaCO3的暗场像作对比，可以看出经过SiO2包覆的纳米CaCO3粒子周围有一白色亮环，从而得到SiO3包覆层的暗场照片。用高分辨方法观察了包覆层与CaCO3粒子间的界面情况。
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| 关 键 词： | SiO2-CaCO3纳米复合材料 透射电子显微镜 暗场像 |
| 文章编号： | 1004-4957（2006）03-0103-03 |
| 收稿时间： | 2005-04-30 |
| 修稿时间： | 2005-10-19 |
Characterizaiton of SiO2-cladding Nano-CaCO3 with Transmission Electron Microscope |
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| SHI Yong-xi,SHAO Lei,CHEN Jian-feng.Characterizaiton of SiO2-cladding Nano-CaCO3 with Transmission Electron Microscope[J].Journal of Instrumental Analysis,2006,25(3):103-105. |
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| Authors: | SHI Yong-xi SHAO Lei CHEN Jian-feng |
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| Abstract: | Applying the electron-diffractive mode of transmission electron microscope(TEM),an objective aperture with a proper diameter was used to select the diffractive area of non-crystal SiO_2 for taking the dark field images of SiO_2-cladding nano-CaCO_3,produced by the sol-gel method.Compared with the dark field image of the non-cladding nano-CaCO_3,a white halo could be observed around the SiO_2-cladding nanoCaCO_3,thus a dark field photo of the SiO_2-cladding layer was obtained.The interface between the cladding layer and the CaCO_3 particle was observed by a high resolution method. |
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| Keywords: | SiO2 - CaCO3 nanocomposite TEM Dark-field image |
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