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Metals 2017, 7(10), 384;

Metallurgical Challenges in Carbon Nanotube-Reinforced Metal Matrix Nanocomposites

Department of Materials Science and Engineering, Sharif University of Technology, Azadi Avenue, Tehran 11155-9466, Iran
Department of Materials Science and Engineering, University of Tabriz, Tabriz 51666-16471, Iran
Joining and Welding Research Institute (JWRI), Osaka University, Osaka 567-0047, Japan
Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore
Authors to whom correspondence should be addressed.
Received: 14 July 2017 / Revised: 14 August 2017 / Accepted: 11 September 2017 / Published: 22 September 2017
(This article belongs to the Special Issue Metal Matrix Composites)
PDF [38366 KB, uploaded 22 September 2017]


The inclusion of carbon nanotubes (CNTs) into metallic systems has been the main focus of recent literature. The aim behind this approach has been the development of a new property or improvement of an inferior one in CNT-dispersed metal matrix nanocomposites. Although it has opened up new possibilities for promising engineering applications, some practical challenges have restricted the full exploitation of CNTs’ unique characteristics. Non-uniform dispersion of CNTs in the metallic matrix, poor interfacial adhesion at the CNT/metal interface, the unfavorable chemical reaction of CNTs with the matrix, and low compactability are the most significant challenges, requiring more examination. The present paper provides a broad overview of the mentioned challenges, the way they occur, and their adverse influences on the physicomechanical properties of CNT-reinforced metal matrix nanocomposites. The suggested solutions to these issues are fully addressed. View Full-Text
Keywords: carbon nanotube; nanocomposite; dispersion; interfacial adhesion; phase transformation; physicomechanical properties carbon nanotube; nanocomposite; dispersion; interfacial adhesion; phase transformation; physicomechanical properties

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Azarniya, A.; Safavi, M.S.; Sovizi, S.; Azarniya, A.; Chen, B.; Madaah Hosseini, H.R.; Ramakrishna, S. Metallurgical Challenges in Carbon Nanotube-Reinforced Metal Matrix Nanocomposites. Metals 2017, 7, 384.

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