COMPARISON ON REFINEMENT OF IRON POWDER BY BALL MILLING ASSISTED BY DIFFERENT EXTERNAL FIELDS
来源期刊：Acta Metallurgica Sinica2006年第6期
论文作者：M. Zhu B. Cao L.Y. Dai
Key words：ball milling; cryomilling; dielectric barrier discharge (DBD); anoparticle;
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.
M. Zhu1，B. Cao1，L.Y. Dai1
(1.School of Mechanical Engineering, South China University of Technology,Guangzhou 510640, China;
2.Marine Engineering Institute, Jimei University, Xiamen 361021, China)
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.
Key words:ball milling; cryomilling; dielectric barrier discharge (DBD); anoparticle;
【全文内容正在添加中】
