Synergism of mechanical milling and dielectric barrier discharge plasma on the fabrication of nano-powders of pure metals and tungsten carbide

被引：0
|
作者：
Zhu, M. [1 ]
Dai, L.Y. [2 ]
Gu, N.S. [1 ]
Cao, B. [1 ]
Ouyang, L.Z. [1 ]
机构：
[1] School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, China
[2] Marine Engineering Institute, Jimei University, Xiamen, 361021 Fujian, China
来源：
Journal of Alloys and Compounds | 2009年 / 478卷 / 1-2期
关键词：
In the present work; a new mechanical alloying method; which combines ball milling and dielectric barrier discharge plasma (DBDP) together; has been reported. By treating pure metals; such as Al; Fe and W and synthesis WC with this method; an obvious synergism of ball milling and DBDP has been revealed; which is characterized by concurrent action of high temperature and stress on the powder in a very short time. Owing to the synergism of ball milling and DBDP; the fabricated metal powder has unique features; such as lump-like morphology with very fine primitive particles and high specific surface area. The chemical activity of the powders is very high; which makes possible the formation of nanostructured tungsten carbides at a temperature much lower than that in conventional carburizing of W. This provides a potential method for fabricating ultra fine powders and synthesizing metal ceramics. © 2008 Elsevier B.V. All rights reserved;
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页码：624 / 629
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