- Reduction and Spark Plasma Sintering of the W(Tungsten) Nanopowder Produced by the Electric Explosion of Wire Process
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Ji-Soon Kim, Cheol-Hee Kim, Eun-Ju Park, Young-Soon Kwon, Jin-Chun Kim, Sung-Ho Lee, Dong-Ik Jung
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J Korean Powder Metall Inst. 2006;13(4):269-277.
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DOI: https://doi.org/10.4150/KPMI.2006.13.4.269
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 Abstract
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- [ 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°C.
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