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http://dx.doi.org/10.4150/KPMI.2006.13.4.269

Reduction and Spark Plasma Sintering of the W(Tungsten) Nanopowder Produced by the Electric Explosion of Wire Process  

Kim Ji-Soon (School of Materials Science & Engineering, University of Ulsan)
Kim Cheol-Hee (School of Materials Science & Engineering, University of Ulsan)
Park Eun-Ju (School of Materials Science & Engineering, University of Ulsan)
Kwon Young-Soon (School of Materials Science & Engineering, University of Ulsan)
Kim Jin-Chun (School of Materials Science & Engineering, University of Ulsan)
Lee Sung-Ho (Technology Research Center, Agency for Defense Development)
Jung Dong-Ik (Technology Research Center, Agency for Defense Development)
Publication Information
Journal of Powder Materials / v.13, no.4, 2006 , pp. 269-277 More about this Journal
Abstract
[ ${\beta}-W(W_3O)$ ] oxide layer on the surface of each W(tungsten) nanopowder produced by the electric explosion of wire(EEW) process were formed during the 1vol.% air passivation process. The oxide layer hindered sintering densification of compacts during SPS process. The oxide phase was reduced to the pure W phase during SPS. The W nanopowder's compacts treated by the hydrogen reduction showed high sintered density of 94.5%. after SPS process at $1900^{\circ}C$.
Keywords
W nanopowder; Spark plasma sintering; Electric explosion of wire; Reduction treatment; Sintering densification;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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