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- 열 CVD법에 의한 CNTs/Metal/Al2O3 나노복합분말의 합성 및 특성
- 좌용호, 유승화, 양재교, 오승탁, 강성군
- Synthesis and Characterization of CNTs/Metal/Al2O3 Nanocomposite Powders by Thermal CVD
- Yong-Ho Choa, Seung-Hwa Yoo, Jae-Kyo Yang, Sung-Tag Oh, Sung-Goon Kang
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Journal of Korean Powder Metallurgy Institute 2005;12(2):146-150
DOI: https://doi.org/10.4150/KPMI.2005.12.2.146
2한양대학교 정밀화학공학과
3한양대학교 정밀화학공학과
4서울산업대학교 신소재공학과
5한양대학교 신소재공학과
1Department of Fine Chemical Engineering, Hanyang University
2Department of Fine Chemical Engineering, Hanyang University
3Department of Fine Chemical Engineering, Hanyang University
4Department of Materials Science and Engineering, Seoul National University of Technology
5Division of Materials Science and Engineering, Hanyang University
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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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