Tribological Properties of CNTs-Reinforced Nano Composite Materials

Chika Oliver Ujah, Daramy Vandi Von Kallon, Victor Sunday Aigbodion

Research output: Contribution to journalReview articlepeer-review

13 Citations (Scopus)

Abstract

High modulus of about 1 TPa, high thermal conductivity of over 3000 W/mK, very low coefficient of thermal expansion (CTE), high electrical conductivity, self-lubricating characteristics and low density have made CNTs one of the best reinforcing materials of nano composites for advanced structural, industrial, high strength and wear-prone applications. This is so because it has the capacity of improving the mechanical, tribological, electrical, thermal and physical properties of nanocomposites. So, this study is aimed at providing the latest discoveries on the tribological behavior of CNTs-reinforced composites. The composites reviewed included metal matrix composites (MMCs), polymer matrix composites (PMCs) and ceramic matrix composites (CMCs) reinforced with CNTs. Their tribological characteristics, uses, production challenges, conclusion and recommendations are presented. The work presented the best technique to disperse CNTs on matrices to avoid its agglomeration, since agglomeration is one of the major challenges in reinforcing with CNTs. It was discovered that ball milling destroys the outer walls of CNTs but recommended that ultrasonication and functionalization before ball milling eliminate this adverse effect of ball milling. In addition, it was discovered that addition of CNTs to composite matrices improved the wear resistance, reduced the wear volume, decreased the coefficient of friction (COF) and provided self-lubricating effect on MMCs, PMCs and CMCs.

Original languageEnglish
Article number95
JournalLubricants
Volume11
Issue number3
DOIs
Publication statusPublished - Mar 2023

Keywords

  • carbon nanotubes
  • ceramics matrix composites
  • metal matrix composites
  • polymer matrix composites
  • tribology

ASJC Scopus subject areas

  • Mechanical Engineering
  • Surfaces, Coatings and Films

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