| COMPARISON ON REFINEMENT OF IRON POWDER BY BALL MILLING ASSISTED BY DIFFERENT EXTERNAL FIELDS |
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| 作者姓名： | L.Y. Dai B. Cao and M. Zhu* School of Mechanical Engineering South China University of Technology Guangzhou China Marine Engineering Institute Jimei University Xiamen China |
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| 作者单位： | L.Y. Dai1，2)，B. Cao1)，and M. Zhu1)* 1) School of Mechanical Engineering，South China University of Technology，Guangzhou 510640，China 2) Marine Engineering Institute，Jimei University，Xiamen 361021，China |
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| 基金项目： | 国家自然科学基金;福建省自然科学基金 |
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| 摘 要： | The cryogenic milling and milling in conjunction with dielectric barrier discharge plasma (DBDP)have been separately set up. The combined effect of low temperature and plasma on ball milling has been investigated by examining the refinement of particle size and grain size of iron powder using scanning electron microscopy, X-ray diffraction, and small angle X-ray scattering. It was found that the mean size of iron particles could reach 104nm only after 10 hours of ball milling in conjunction with DBDP, whereas a minimum average grain size of 8.4nm was obtained by cryomilling at -20℃; however, it is difficult to refine the particle size and grain size under the same milling condition in the absence of DBDP and cryogenic temperature.
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| 收稿时间： | 22 March 2006 |
| 修稿时间： | 1 August 2006. |
Comparison on Refinement of Iron Powder by Ball Milling Assisted by Different External Fields |
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| L.Y. Dai,,B. Cao,and M. Zhu* School of Mechanical Engineering,South China University of Technology,Guangzhou ,China Marine Engineering Institute,Jimei University,Xiamen ,China.COMPARISON ON REFINEMENT OF IRON POWDER BY BALL MILLING ASSISTED BY DIFFERENT EXTERNAL FIELDS[J].Acta Metallurgica Sinica(English Letters),2006,19(6):411-417. |
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| Authors: | LY Dai B Cao M Zhu |
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| Affiliation: | 1. School of Mechanical Engineering, South China University of Technology,Guangzhou 510640, China;Marine Engineering Institute, Jimei University, Xiamen 361021, China
2. School of Mechanical Engineering, South China University of Technology,Guangzhou 510640, China |
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| Abstract: | The cryogenic milling and milling in conjunction with dielectric barrier discharge plasma (DBDP)have been separately set up. The combined effect of low temperature and plasma on ball milling has been investigated by examining the refinement of particle size and grain size of iron powder using scanning electron microscopy, X-ray diffraction, and small angle X-ray scattering. It was found that the mean size of iron particles could reach 104nm only after 10 hours of ball milling in conjunction with DBDP, whereas a minimum average grain size of 8.4nm was obtained by cryomilling at -20℃; however, it is difficult to refine the particle size and grain size under the same milling condition in the absence of DBDP and cryogenic temperature. |
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| Keywords: | ball milling cryomilling dielectric barrier discharge (DBD) anoparticle |
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