Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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The Effect of Composition on Hydrogen Reduction Behavior of Ball-milled WO3-CuO Nanocomposite Powders

볼밀링한 WO3-CuO 나노복합분말의 조성에 따른 수소환원 거동

  • Jung Sung-Soo (Department of Metallurgy and Materials Science, Hanyang University) ;
  • Kang Yun-Sung (Department of Metallurgy and Materials Science, Hanyang University) ;
  • Lee Jai-Sung (Department of Metallurgy and Materials Science, Hanyang University)
  • 정성수 (한양대학교 금속재료공학과) ;
  • 강윤성 (한양대학교 금속재료공학과) ;
  • 이재성 (한양대학교 금속재료공학과)
  • Published : 2006.06.01
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Abstract

The effect of Cu content on hydrogen reduction behavior of ball-milled $WO_3$-CuO nanocomposite powders was investigated. Hydrogen reduction behavior and reduction percent(${\alpha}$) of nanopowders were characterized by thermogravimetry (TG) and hygrometry measurements. Activation energy for hydrogen reduction of $WO_3$ nanopowders with different Cu content was calculated at each heating rate and reduction percent(${\alpha}$). The activation energy for reduction of $WO_3$ obtained in this study existed in the ranging from 129 to 139 kJ/mol, which was in accordance with the activation energy for $WO_3$ powder reduction of conventional micron-sized.

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