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http://dx.doi.org/10.4150/KPMI.2011.18.2.105

Fabrication of Ni-free Fe-based Alloy Nano Powder by Pulsed Wire Evaporation in Liquid: Part I. Effect of Wire Diameter and Applied Voltage  

Ryu, Ho-Jin (School of Materials Science and Engineering, University of Ulsan)
Lee, Yong-Heui (School of Materials Science and Engineering, University of Ulsan)
Son, Kwang-Ug (School of Materials Science and Engineering, University of Ulsan)
Kong, Young-Min (School of Materials Science and Engineering, University of Ulsan)
Kim, Jin-Chun (School of Materials Science and Engineering, University of Ulsan)
Kim, Byoung-Kee (School of Materials Science and Engineering, University of Ulsan)
Yun, Jung-Yeul (Korea Institute of Materials Science, Changwon)
Publication Information
Journal of Powder Materials / v.18, no.2, 2011 , pp. 105-111 More about this Journal
Abstract
This study investigated the effect of wire diameter and applied voltage on the fabrication of Ni-free Fe-based alloy nano powders by employing the PWE (pulsed wire evaporation) in liquid, for high temperature oxidation-resistant metallic porous body for high temperature particulate matter (or soot) filter system. Three different diameter (0.1, 0.2, and 0.3 mm) of alloy wire and various applied voltages from 0.5 to 3.0 kV were main variables in PWE process, while X-ray diffraction (XRD), field emission scanning microscope (FE-SEM), and transmission electron microscope (TEM) were used to investigate the characteristics of the Fe-Cr-Al nano powders. It was controlled the number of explosion events, since evaporated and condensed nano-particles were coalesced to micron-sized secondary particles, when exceeded to the specific number of explosion events, which were not suitable for metallic porous body preparation. As the diameter of alloy wire increased, the voltage for electrical explosion increased and the size of primary particle decreased.
Keywords
Fe-based alloy nano powder; Pulsed wire evaporation (PWE); Metallic porous body; Soot filter; Wire diameter; Applied voltage;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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