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《Materials Review》 2009-22
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Study on the Main Promotion Factors of Powder Refinement in High-energy Ball Milling

DAI Leyang1,CHEN Qinglin1,LIN Shaofen1,OUYANG Liuzhang2(1 Marine Engineering Institute,Jimei University,Xiamen 361021;2 School of Material Science and Engineering,South China University of Technology,Guangzhou 510640)  
High-energy ball milling is an effective process to synthesize various materials with non-equilibrium microstructure including nano-powder and has been applied extensively. In order to limit cold welding and promote powder refining,process control agent or cryomilling is used. It is also an effective way to accelerate ball milling using external physics energy fields as assistant which can act on the powders cooperating with mechanical energy. Based on the results of Fe powder refining,the main promotion factors of powder refinement in high-energy ball milling are studied,such as process control agent,low temperature and external energy fields. Only 10h is required for Fe particles to reach 100nm by plasma-assisted ball milling. The high efficiency of refinement is resulting from the hot explosion effect and thermal stress brought up by the plasma during assisted ball milling.
【Fund】: 福建省自然科学基金计划资助项目(E0810024);; 福建省科技重大专项专题资助(2008HZ0002-1);; 集美大学科研基金资助项目(ZQ2007014)
【CateGory Index】: TB383.1
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