Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Synthesis and Characterization of CNTs/Metal/Al2O3 Nanocomposite Powders by Thermal CVD

열 CVD법에 의한 CNTs/Metal/Al2O3 나노복합분말의 합성 및 특성

  • Choa Yong-Ho (Department of Fine Chemical Engineering, Hanyang University) ;
  • Yoo Seung-Hwa (Department of Fine Chemical Engineering, Hanyang University) ;
  • Yang Jae-Kyo (Department of Fine Chemical Engineering, Hanyang University) ;
  • Oh Sung-Tag (Department of Materials Science and Engineering, Seoul National University of Technology) ;
  • Kang Sung-Goon (Division of Materials Science and Engineering, Hanyang University)
  • 좌용호 (한양대학교 정밀화학공학과) ;
  • 유승화 (한양대학교 정밀화학공학과) ;
  • 양재교 (한양대학교 정밀화학공학과) ;
  • 오승탁 (서울산업대학교 신소재공학과) ;
  • 강성군 (한양대학교 신소재공학과)
  • Published : 2005.04.01
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Abstract

An optimum route to synthesize $Al_2O_3$-based composite powders with homogeneous dispersion of carbon nanotubes (CNTs) was investigated. CNTs/Metal/$Al_2O_3$ nanocomposite powders were fabricated by thermal chemical vapor deposition of $C_2H_2$ gas over metal/$Al_2O_3$ nanocomposite catalyst prepared by selective reduction of metal oxide/$Al_2O_3$ powders. The FT-Raman spectroscopy analysis revealed that the CNTs have single- and multi-walled structure. The CNTs with the diameter of 25-43 nm were homogeneously distributed in the metal/$Al_2O_3$ powders, and their characteristics were strongly affected by a kind of metal catalyst and catalyst size. The experimental results show that the composite powder with required size and dispersion of CNTs can be realized by control of synthesis condition.

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