Synthesis and Densification of CNTs/Fe/Al2O3 Nanocomposite Powders by Chemical Vapor Deposition

Seung Hwa Yoo; H.J. Wang; Sung Tag Oh; Sung Goon Kang; Yong Ho Choa

doi:10.4028/www.scientific.net/KEM.317-318.665

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 317-318Synthesis and Densification of CNTs/Fe/Al2O3...

Synthesis and Densification of CNTs/Fe/Al₂O₃ Nanocomposite Powders by Chemical Vapor Deposition

Abstract:

CNTs/Fe/Al2O3 nanocomposites were prepared by thermal CVD and SPS methods. The dispersion of CNTs in the Fe/Al2O3 matrix were controlled by an attrition milling process. FESEM analysis revealed that the CNTs of 5 vol.% were homogeneously dispersed in the Fe/Al2O3. The effects of CNTs dispersion on the mechanical and electrical properties of the specimens were investigated. Fracture strength and electrical conductivity of 5 vol.% CNTs/Fe/Al2O3 specimen were measured at 641 MPa and 2.93 10-11 mS/m, whereas that of a 20 vol.% CNTs/Fe/Al2O3 specimen were 208 MPa and 8.46 10-7 mS/m, respectively. In comparison with an Al2O3 monolith, the specimen with 5 vol.% CNTs showed enhanced fracture strength and increased electrical conductivity.

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Periodical:

Key Engineering Materials (Volumes 317-318)

Pages:

665-668

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.317-318.665

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Online since:

August 2006

Authors:

Seung Hwa Yoo, H.J. Wang, Sung Tag Oh, Sung Goon Kang, Yong Ho Choa

Keywords:

Carbon Nanotube (CN), Nanocomposite, Spark Plasma Sintering (SPS), Thermal CVD

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