Metal Matrix Composites Reinforced with Carbon Nanotubes

A special issue of Metals (ISSN 2075-4701).

Deadline for manuscript submissions: closed (30 November 2019) | Viewed by 4460

Special Issue Editors


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Guest Editor
Metallurgical and Materials Engineering Department, Faculty of Engineering, Oporto University, 4099-002 Porto, Portugal
Interests: advanced manufacturing processes; mechanical and microstructural characterization of metallic materials, nanocomposites
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Metallurgical and Materials Engineering Department, Faculty of Engineering, Oporto University, Porto, Portugal
Interests: advanced materials; mechanical properties; metallic materials; metallic matrix composites; microstructural characterization; nanomaterials; nanocomposites; solid-state diffusion bonding

E-Mail Website
Guest Editor
Metallurgical and Materials Engineering Department, Faculty of Engineering, Oporto University, 4099-002 Porto, Portugal
Interests: metal matrix nanocomposites; nanomaterials; reactive multilayers; microstructural characterization; advanced materials; joining technologies; titanium alloys; diffusion bonding
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Composites are multiphase or hybrid materials which, when combined, display noticeably different properties from conventional materials. Nanocomposites with metallic, ceramic, or polymeric matrices reinforced by nanoparticles have been the subject of intense research. These nanocomposites show significant improvements in various properties, exceeding the values of composites containing micron-scale reinforcements.

The greatest challenges facing the development of nanocomposites for wide application are the cost and availability of nanoscale reinforcements and the complexity of the synthesis and processing methods of these nanocomposites. As with conventional composites, the properties of nanocomposites are strongly dependent on the properties of the reinforcement material, their distribution and volume fraction, as well as the interfacial bond between the reinforcement and the matrix.

Carbon nanotubes, due to their extraordinary properties, are excellent candidates for use as reinforcements in nanocomposites. Interest in research on this subject continues since the expected promising results of these nanocomposites have not yet been obtained due to several challenges that need to be overcome.

The main challenges in this field are the development of cost-effective production techniques that provide a dense and homogeneous dispersion of reinforcement through the matrix and lead to a strong interfacial bond between the matrix and the reinforcement.

This Special Issue aims to publish research papers and reviews that cover recent developments on the production, characterization, and properties of “Metal Matrix Composites Reinforced with Carbon Nanotubes”, as well as their potential in future applications.

Prof. Manuel Vieira
Prof. Filomena Viana
Prof. Sónia Simões
Guest Editors

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Keywords

  • Nanocomposites
  • Metallic matrix
  • Carbon nanotubes
  • Synthesis techniques
  • Dispersion
  • Properties
  • Microstructure
  • Industrial applications

Published Papers (1 paper)

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Research

13 pages, 4183 KiB  
Article
Characterization of Ni–CNTs Nanocomposites Produced by Ball-Milling
by Íris Carneiro, Filomena Viana, Manuel F. Vieira, José Valdemar Fernandes and Sónia Simões
Metals 2020, 10(1), 2; https://doi.org/10.3390/met10010002 - 18 Dec 2019
Cited by 10 | Viewed by 3828
Abstract
This research focuses on the characterization of a metal matrix nanocomposite (MMNC) comprised of a nickel matrix reinforced by carbon nanotubes (CNTs). The aim of this study was to characterize Ni–CNTs nanocomposites produced by powder metallurgy using ball-milling. CNTs were initially untangled using [...] Read more.
This research focuses on the characterization of a metal matrix nanocomposite (MMNC) comprised of a nickel matrix reinforced by carbon nanotubes (CNTs). The aim of this study was to characterize Ni–CNTs nanocomposites produced by powder metallurgy using ball-milling. CNTs were initially untangled using ultrasonication followed by mixture/dispersion with Ni powder by ball-milling for 60, 180, or 300 min. The mixtures were cold-pressed and then pressureless sintered at 950 °C for 120 min under vacuum. Their microstructural characterization was mainly performed by optical microscopy (OM), scanning electron microscopy (SEM), and electron backscatter diffraction (EBSD). The mechanical properties were evaluated by Vickers microhardness. The results indicate that combining ultrasonication and ball-milling can successfully produce Ni–CNTs nanocomposites. The ball-milling time has a significant effect on both the CNT dispersion and the final nanocomposite microstructure. Full article
(This article belongs to the Special Issue Metal Matrix Composites Reinforced with Carbon Nanotubes)
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