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- 탄소나노튜브가 분산된 Al2O3 나노복합분말의 치밀화 및 특성
- 유승화, 양재교, 오승탁, 강계명, 강성군, 좌용호
- Densification and Some Properties of Carbon Nanotubes-Dispersed Al2O3 Nanocomposite Powders
- Seung-Hwa Yoo, Jae-Kyo Yang, Sung-Tag Oh, Kae-Myung Kang, Sung-Goon Kang, Yong-Ho Choa
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Journal of Korean Powder Metallurgy Institute 2005;12(6):393-398
DOI: https://doi.org/10.4150/KPMI.2005.12.6.393
1한양대학교 재료화학공학부
2한양대학교 재료화학공학부
3서울산업대학교 신소재공학과
4서울산업대학교 신소재공학과
5한양대학교 신소재공학부
6한양대학교 재료화학공학부
1Division of Materials and Chemical Engineering, Hanyang University
2Division of Materials and Chemical Engineering, Hanyang University
3Department of Materials Science and Engineering, Seoul National University of Technology
4Department of Materials Science and Engineering, Seoul National University of Technology
5Division of Materials Science and Engineering, Hanyang University
6Division of Materials and Chemical Engineering, Hanyang University
2한양대학교 재료화학공학부
3서울산업대학교 신소재공학과
4서울산업대학교 신소재공학과
5한양대학교 신소재공학부
6한양대학교 재료화학공학부
1Division of Materials and Chemical Engineering, Hanyang University
2Division of Materials and Chemical Engineering, Hanyang University
3Department of Materials Science and Engineering, Seoul National University of Technology
4Department of Materials Science and Engineering, Seoul National University of Technology
5Division of Materials Science and Engineering, Hanyang University
6Division of Materials and Chemical Engineering, Hanyang University
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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°C showed decreased value with increasing sintering temperature due to the oxidation of CNTs.
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