Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Densification and Some Properties of Carbon Nanotubes-Dispersed Al2O3 Nanocomposite Powders

탄소나노튜브가 분산된 Al2O3 나노복합분말의 치밀화 및 특성

  • Yoo Seung-Hwa (Division of Materials and Chemical Engineering, Hanyang University) ;
  • Yang Jae-Kyo (Division of Materials and Chemical Engineering, Hanyang University) ;
  • Oh Sung-Tag (Department of Materials Science and Engineering, Seoul National University of Technology) ;
  • Kang Kae-Myung (Department of Materials Science and Engineering, Seoul National University of Technology) ;
  • Kang Sung-Goon (Division of Materials Science and Engineering, Hanyang University) ;
  • Choa Yong-Ho (Division of Materials and Chemical Engineering, Hanyang University)
  • 유승화 (한양대학교 재료화학공학부) ;
  • 양재교 (한양대학교 재료화학공학부) ;
  • 오승탁 (서울산업대학교 신소재공학과) ;
  • 강계명 (서울산업대학교 신소재공학과) ;
  • 강성군 (한양대학교 신소재공학부) ;
  • 좌용호 (한양대학교 재료화학공학부)
  • Published : 2005.12.01
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Abstract

In-situ processing route was adopted to disperse carbon nanotubes (CNTs) into $Al_2O_3$ powders homogeneously. The $Al_2O_3$ composite powders with homogeneous dispersion of CNTs could be synthesized by a catalytic route for in-situ formation of CNTs on nano-sized Fe dispersed $Al_2O_3$ powders. CNTs/Fe/$Al_2O_3$ nanopowders were densified by spark plasma sintering (SPS). The hardness and bending strength as well as electrical conductivity increased with increasing sintering temperature. However, the electrical conductivity of the composites sintered at above $1500^{\circ}C$ showed decreased value with increasing sintering temperature due to the oxidation of CNTs.

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References

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