| Growth mechanism of Cu nanopowders prepared by anodic arc plasma |
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| 作者姓名： | 魏智强 夏天东 马军 戴剑锋 冯旺军 王青 闫鹏勋 |
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| 作者单位： | School of Science Lanzhou University of Technology Lanzhou 730050 ChinaCollege of Materials Science and Engineering Lanzhou University of Technology Lanzhou 730050 China，College of Materials Science and Engineering Lanzhou University of Technology Lanzhou 730050 China，School of Science Lanzhou University of Technology Lanzhou 730050 China，School of Science Lanzhou University of Technology Lanzhou 730050 China，School of Science Lanzhou University of Technology Lanzhou 730050 China，School of Science Lanzhou University of Technology Lanzhou 730050 China，Research Institute of Plasma and Metal Materials Lanzhou University Lanzhou 730000 China |
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| 基金项目： | Foundation item： Project （3ZS042-B25-017） supported by the Natural Science Foundation of Gansu Province, China |
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| 摘 要： | 1 Introduction In recent years, the research and development for metal nanopowders has attracted significant interest and it is still the subject of intense investigation owing to their intriguing properties and extensive prospects 1-5]. Metal nanopowder…
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| 关 键 词： | 成核 生长机制 铜 纳米粉末 阳极电弧等离子体 |
| 收稿时间： | 2005-04-26 |
| 修稿时间： | 2005-08-15 |
Growth mechanism of Cu nanopowders prepared by anodic are plasma |
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| Zhi-qiang WEI, Tian-dong XIA, Jun MA, Jian-feng DAI, Wang-jun FENG, Qing WANG,Peng-xun YAN.Growth mechanism of Cu nanopowders prepared by anodic arc plasma[J].Transactions of Nonferrous Metals Society of China,2006,16(1):168-172. |
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| Authors: | Zhi-qiang WEI Tian-dong XIA Jun MA Jian-feng DAI Wang-jun FENG Qing WANG Peng-xun YAN |
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| Affiliation: | aSchool of Science, Lanzhou University of Technology, Lanzhou 730050, China;bCollege of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China;cResearch Institute of Plasma and Metal Materials, Lanzhou University, Lanzhou 730000, China |
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| Abstract: | Based on the thermodynamics and kinetics theory, a theoretical model was built to illuminate the formation of metal nanopowders by anodic arc discharging plasma method, and the mechanism of particle nucleation and growth was investigated. In addition, the morphology, crystal structure, particle size and specific surface area of the nanopowders were characterized by X-ray diffraction(XRD), Brunauer-Emmett-Teller(BET) adsorption, transmission electron microscopy(TEM) and the corresponding selected area electron diffraction(SAED). The experimental results indicate that the nanopowders prepared by this process have uniform size, high purity, single phase and spherical shape. The crystal structure is FCC structure, the same as that of the bulk materials; the specific surface area is 12 m2/g, the particle size distribution ranges from 30 to 90 nm with an average particle size of 67 nm which is obtained from TEM and confirmed from XRD and BET results. |
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| Keywords: | anodic arc plasma Cu nanopowders nucleation grain growth |
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