Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Reduction and Spark Plasma Sintering of the W(Tungsten) Nanopowder Produced by the Electric Explosion of Wire Process

전기선폭발법으로 제조한 나노 W(텅스텐) 분말의 환원처리 및 방전플라즈마소결에 의한 조밀화

  • 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)
  • 김지순 (울산대학교 첨단소재공학부) ;
  • 김철희 (울산대학교 첨단소재공학부) ;
  • 박은주 (울산대학교 첨단소재공학부) ;
  • 권영순 (울산대학교 첨단소재공학부) ;
  • 김진천 (울산대학교 첨단소재공학부) ;
  • 이성호 (국방과학연구소 기술연구본부) ;
  • 정동익 (국방과학연구소 기술연구본부)
  • Published : 2006.08.01
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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 $1900^{\circ}C$.

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References

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