Thermal conductivity of powder injection molded carbon nanotube-reinforced copper-matrix composites

A new fabrication method for carbon nanotube (CNT)-reinforced copper-matrix composites is presented. The combination of a nanoscale dispersion of functionalized CNTs in a low-viscosity paraffin wax under sonication treatment followed by powder injection molding (PIM) was carried out. The CNT content...

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Main Authors: Muhsan, A.S., Ahmad, F., Mohamed, N.M., Raza, M.R.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.25934 /
Published: American Powder Metallurgy Institute 2015
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85026423703&partnerID=40&md5=63e3c00f955c1bb9204a1b5c83eba233
http://eprints.utp.edu.my/25934/
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spelling utp-eprints.259342021-08-30T08:48:12Z Thermal conductivity of powder injection molded carbon nanotube-reinforced copper-matrix composites Muhsan, A.S. Ahmad, F. Mohamed, N.M. Raza, M.R. A new fabrication method for carbon nanotube (CNT)-reinforced copper-matrix composites is presented. The combination of a nanoscale dispersion of functionalized CNTs in a low-viscosity paraffin wax under sonication treatment followed by powder injection molding (PIM) was carried out. The CNT content in the copper matrix was varied from 0 to 10 vol.. Evidence for the existence of functional groups and microstructural analyses of the composites are presented utilizing Fourier transformed infrared spectroscopy (FTIR), transmission electron microscope (TEM), and energy dispersive spectroscopy (EDS). Field emission electron microscope (FESEM) and TEM observations confirm an excellent dispersion of CNTs in the copper matrix and bonding integrity between copper particles and individual CNTs. FTIR spectroscopy identified functional groups on the outer surface of individual CNTs; these provide electrostatic repulsive forces that help in overcoming the van der Waal's forces and hence improve dispersion of the CNTs. The increase in thermal conductivity of the copper-CNT composites was directly proportional to the increase in sintering temperature and CNT content. Adding 10 vol. of function-alized CNTs resulted in a significant increase in thermal conductivity up to 581 W/m·K; this corresponds to an increase of 76 and 16.2, compared with pure sintered copper and the theoretically predicted level, respectively. American Powder Metallurgy Institute 2015 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85026423703&partnerID=40&md5=63e3c00f955c1bb9204a1b5c83eba233 Muhsan, A.S. and Ahmad, F. and Mohamed, N.M. and Raza, M.R. (2015) Thermal conductivity of powder injection molded carbon nanotube-reinforced copper-matrix composites. International Journal of Powder Metallurgy, 51 (1). pp. 57-66. http://eprints.utp.edu.my/25934/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description A new fabrication method for carbon nanotube (CNT)-reinforced copper-matrix composites is presented. The combination of a nanoscale dispersion of functionalized CNTs in a low-viscosity paraffin wax under sonication treatment followed by powder injection molding (PIM) was carried out. The CNT content in the copper matrix was varied from 0 to 10 vol.. Evidence for the existence of functional groups and microstructural analyses of the composites are presented utilizing Fourier transformed infrared spectroscopy (FTIR), transmission electron microscope (TEM), and energy dispersive spectroscopy (EDS). Field emission electron microscope (FESEM) and TEM observations confirm an excellent dispersion of CNTs in the copper matrix and bonding integrity between copper particles and individual CNTs. FTIR spectroscopy identified functional groups on the outer surface of individual CNTs; these provide electrostatic repulsive forces that help in overcoming the van der Waal's forces and hence improve dispersion of the CNTs. The increase in thermal conductivity of the copper-CNT composites was directly proportional to the increase in sintering temperature and CNT content. Adding 10 vol. of function-alized CNTs resulted in a significant increase in thermal conductivity up to 581 W/m·K; this corresponds to an increase of 76 and 16.2, compared with pure sintered copper and the theoretically predicted level, respectively.
format Article
author Muhsan, A.S.
Ahmad, F.
Mohamed, N.M.
Raza, M.R.
spellingShingle Muhsan, A.S.
Ahmad, F.
Mohamed, N.M.
Raza, M.R.
Thermal conductivity of powder injection molded carbon nanotube-reinforced copper-matrix composites
author_sort Muhsan, A.S.
title Thermal conductivity of powder injection molded carbon nanotube-reinforced copper-matrix composites
title_short Thermal conductivity of powder injection molded carbon nanotube-reinforced copper-matrix composites
title_full Thermal conductivity of powder injection molded carbon nanotube-reinforced copper-matrix composites
title_fullStr Thermal conductivity of powder injection molded carbon nanotube-reinforced copper-matrix composites
title_full_unstemmed Thermal conductivity of powder injection molded carbon nanotube-reinforced copper-matrix composites
title_sort thermal conductivity of powder injection molded carbon nanotube-reinforced copper-matrix composites
publisher American Powder Metallurgy Institute
publishDate 2015
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85026423703&partnerID=40&md5=63e3c00f955c1bb9204a1b5c83eba233
http://eprints.utp.edu.my/25934/
_version_ 1741197056451543040
score 11.62408

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