| 电流体动力学技术制备的Sn-Bi纳米超微粉的微观结构特征 |
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| 引用本文： | 于溪凤,胡火生,贺礼端,蒋 政,刘 祥,胡壮麒.电流体动力学技术制备的Sn-Bi纳米超微粉的微观结构特征[J].物理学报,1999,48(6):1030-1036. |
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| 作者姓名： | 于溪凤 胡火生 贺礼端 蒋 政 刘 祥 胡壮麒 |
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| 作者单位： | (1)东北大学材料与冶金学院，沈阳 110006; (2)中国科学院金属研究所快速凝固非平衡合金国家重点实验室,沈阳 110015 |
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| 摘 要： | 采用电流体动力学技术制备了Sn-Bi纳米超微粉，利用X射线衍射、透射电子显微镜和高分辨电子显微镜研究了Sn-Bi纳米超微粉的微观结构特征，结果表明：所制取的Sn-Bi纳米超微粉由四方结构的β-Sn单相过饱和固溶体和菱方结构的Bi单相过饱和固溶体所组成，这些纳米超微粉绝大部分为单晶结构，极少量为孪晶结构，小于10nm的颗粒为完整单晶，10nm以上的单晶颗粒中存在着位错．并对其结构形成机制进行了分析.
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| 关 键 词： | 锡铋纳米粉 微观结构 电流体动力学 制备 |
| 收稿时间： | 1998-07-23 |
MICROSTRUCTURAL FEATURE OF NANOPHASE Sn-Bi PARTICLES PRODUCED BY AN ELECTROHYDRODYNAMIC TECHNIQUE |
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| YU XI-FENG,HU HUO-SHENG,HE LI-DUAN,JIANG ZHENG,LIU XIANG and HU ZHUANG-QI.MICROSTRUCTURAL FEATURE OF NANOPHASE Sn-Bi PARTICLES PRODUCED BY AN ELECTROHYDRODYNAMIC TECHNIQUE[J].Acta Physica Sinica,1999,48(6):1030-1036. |
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| Authors: | YU XI-FENG HU HUO-SHENG HE LI-DUAN JIANG ZHENG LIU XIANG and HU ZHUANG-QI |
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| Abstract: | Sn-Bi nanometer powders were produced by an electrohydrodynamic technique. The microstructural feature of Sn-Bi nanometer powders was investigated by means of XRD, TEM and HREM. The results show that Sn-Bi nanometer powders produced are composed of tetragonal β-Sn monophase supersaturated solid solution and rhombohedral Bi monophase supersaturated solid solution. Most of the Sn-Bi nanometer powders are single crytals, only a few Sn-Bi nanometer powders are twin crystals. The particles of﹤10nm in diameter are perfect single crystals. There exist dislocations in the particles larger than 10nm in diameter. The formation mechanism of microstructure for Sn-Bi nanometer powders is analyzed. |
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