DIELECTRIC BARRIER DISCHARGE PLASMA ASSISTED BALL MILLING TECHNOLOGY AND ITS APPLICATIONS IN MATERIALS FABRICATION
Min ZHU1,2(),Zhongchen LU2,3,Renzong HU1,2,Liuzhang OUYANG1,2
1 School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
2 Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510640, China
3 School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China
Cite this article:
Min ZHU, Zhongchen LU, Renzong HU, Liuzhang OUYANG. DIELECTRIC BARRIER DISCHARGE PLASMA ASSISTED BALL MILLING TECHNOLOGY AND ITS APPLICATIONS IN MATERIALS FABRICATION. Acta Metall Sin, 2016, 52(10): 1239-1248.
The development of external field assisted milling technologies and their application in materials fabrication have been briefly described. A recent developed milling method named as dielectric barrier discharge plasma assisted ball milling (DBDP-milling) was introduced. A combination of heating effect and high energy electron bombardment effect produced by plasma, as well as the milling mechanical effect was induced simultaneously in the DBDP-milling, which can effectively promote the powder refinement, activation and chemical reaction. On this basis, the DBDP-milling method was applied in the fabrication of cemented carbide, anode materials for lithium ion batteries, hydrogen storage materials, and so on. The studies have indicated that DBDP-milling could improve the efficiency of mill, produce unique structure and thus enhanced properties. In addition, DBDP-milling is also possible to establish a new material production process. Research results have demonstrated that the DBDP-milling method has a great potential in refinement, surface modification, mechanical alloying, composite fabrication and gas-solid reaction of powder materials for different applications.
Fund: Supported by National Natural Science Foundation of China (No.51231003), National Basic Research Program of China (No.2010CB631300), Science Fund for Creative Research Groups of the National Natural Science Foundation of China (No.NSFC51621001), Natural Science Foundation of Guangdong Province (No.05200618) and Guangdong Provincial Laboratory System Construction Project (No.2012A061400002)
Fig.3 SEM images of Al powder milled in conventional milling (a) and DBDP-milling (b) respectively for 15 h[24]
Fig.4 SEM images of TiO2 powder milled in conventional milling (a) and DBDP-milling (b) respectively for 7 h[24]
Fig.5 DSC curves of W-C powder mixture prepared by conventional milling (a) and DBDP-milling with tension of 24 kV (b) for 3 h[25]
Fig.6 SEM images of powders after DBDP-milling for 3 h[32,35] (a) W-C-Co powders, DBDP-milling (b) WC powders after heating at 1100 ℃ for 1 h (c) surface of WC-8Co bulk after heating at 1390 ℃ for 1 h
Fig.7 Microstructure and performance of Sn-C composite produced by O2-DBDP-milling[39] (a) backscattered electron SEM image (b) HRTEM image of typical microstructures in the Sn@SnOx/C composite (c) rate capability of the Sn@SnOx/C composite (Cut-off potential: 0.01~1.5 V)
Fig.8 Schematic of the preparation process of the MgInAlTi alloy by DBDP-milling[48]
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