Paper Title:

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

Periodical Key Engineering Materials (Volumes 317 - 318)
Main Theme The Science of Engineering Ceramics III
Edited by T. Ohji, T. Sekino and K. Niihara
Pages 665-668
DOI 10.4028/www.scientific.net/KEM.317-318.665
Citation Seung Hwa Yoo et al., 2006, Key Engineering Materials, 317-318, 665
Online since August, 2006
Authors Seung Hwa Yoo, H.J. Wang, Sung Tag Oh, Sung Goon Kang, Yong Ho Choa
Keywords Carbon Nanotube (CNT), Nanocomposite, Spark Plasma Sintering (SPS), Thermal CVD
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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.