| 电子束辐照诱导Cu超微粒子发生反应的HREM研究 |
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| 引用本文： | 徐淑华,关若男,李日升,于赢大. 电子束辐照诱导Cu超微粒子发生反应的HREM研究[J]. 材料导报, 2000, 14(9): 48-50 |
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| 作者姓名： | 徐淑华 关若男 李日升 于赢大 |
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| 作者单位： | 华南理工大学应用物理系,广州,510641;中科院金属研究所固体原子象开放实验室,沈阳,110015;中科院金属研究所固体原子象开放实验室,沈阳,110015 |
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| 摘 要： | 用高分辨电子显微镜中的电子束对Ｃｕ超微粒子进行了连续的照射和跟踪观察,结果表明,电子束的辐照,首先使Ｃｕ发生了氧化反应,反应途径：Ｃｕ＋Ｏ２→成分为Ｃｕ和Ｏ的非晶膜→Ｃｕ的晶体氧化物：接着,新生的Ｃｕ的晶体氧化物,在电子束的继续照射下,又发生还原反应,Ｃｕ的氧化物不断地还原为Ｃｕ。在整个还原反应中,伴随着样品局部的多重又氧化还原现象交替出现。
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| 关 键 词： | Cu超微粒子 电子束辐照 非晶膜 氧化 还原 |
HREM Study on Reaction of Ultra-fine Copper Particles Induced by Electron Beam Irradiation |
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| Xu Shuhua,Guan Ruonan,Li Risheng,Yu Yingda. HREM Study on Reaction of Ultra-fine Copper Particles Induced by Electron Beam Irradiation[J]. Materials Review, 2000, 14(9): 48-50 |
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| Authors: | Xu Shuhua Guan Ruonan Li Risheng Yu Yingda |
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| Affiliation: | Applied Physics Department of South China University of Technology .Guangzhou 510641; Laboratory of Atomic Imaging of Solid .Institute of Metal Research .Academia Sinica .Shenyang 110015 .China |
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| Abstract: | The reaction of ultra-fine copper particles was studied ty using high resolution electron microscopy. It was found that ultra-fine copper particles interacted with the residual gases in the EM chamber. Firstly, some amorphous layers formed on the surface of the copper,and then such layers transformed into copper oxides by electron beam irradiation. Finally,the copper oxides just formed were converted to large copper particles by reduction. |
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| Keywords: | ultra-fine copper particles .electron beam irradiation.amorphous layer.oxidation.reduc |
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