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Carbon nanotube-reinforced intermetallic matrix composites: processing challenges, consolidation, and mechanical properties

  • Olusoji Oluremi AyodeleEmail author
  • Mary Ajimegoh Awotunde
  • Mxolisi Brendon Shongwe
  • Adewale Oladapo Adegbenjo
  • Bukola Joseph Babalola
  • Ayorinde Tayo Olanipekun
  • Peter Apata Olubambi
ORIGINAL ARTICLE
  • 88 Downloads

Abstract

Intermetallic compounds (NiAl) are potential high-temperature structure materials due to their exceptional physical and thermo-mechanical properties. NiAl offer a wide range of applications which stem from aerospace to automobile industry but their utilization is restricted owing to low ductility and fracture toughness. However, carbon nanotubes (CNTs) have been recognized to impact strength and improve mechanical properties in metal matrices because of their superior tensile strength, high aspect ratio, low density, and elastic modulus. This has contributed to advance developments of novel materials. In recent times, CNTs have been a focus of immense research due to presence of sp2 C–C bonds in their outer shells, with continuous cylindrical shape which significantly contributed to their superior characteristics. The processing methods of integrating CNTs in metal matrices as well as maintaining their structural integrity through the powder metallurgy routes are reviewed. The mechanical properties, microstructure evolutions, effect of CNT addition, and sintering mechanism are also articulated in this review.

Keywords

Intermetallic matrix composites Carbon nanotubes Mechanical properties Powder metallurgy Metal matrices 

Notes

Acknowledgements

The financial support for this research was provided to Olusoji O. Ayodele, by National Research Foundation (NRF), South Africa. The authors are indeed grateful for this privilege.

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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2019

Authors and Affiliations

  • Olusoji Oluremi Ayodele
    • 1
    Email author
  • Mary Ajimegoh Awotunde
    • 1
  • Mxolisi Brendon Shongwe
    • 2
  • Adewale Oladapo Adegbenjo
    • 1
  • Bukola Joseph Babalola
    • 2
  • Ayorinde Tayo Olanipekun
    • 1
  • Peter Apata Olubambi
    • 1
  1. 1.Centre for Nanoengineering and Tribocorrosion, School of Mining, Metallurgy and Chemical EngineeringUniversity of JohannesburgJohannesburgSouth Africa
  2. 2.Institute for Nanoengineering Research, Department of Chemical, Metallurgy and Materials EngineeringTshwane University of TechnologyPretoriaSouth Africa

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