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<p>Aluminium (Al)-based hybrid nanocomposites reinforced with multi-walled carbon nanotubes (MWCNTs), graphite nanoplatelets (GnP), and hexagonal boron nitride (hBN) were developed to enhance the mechanical integrity and tribological stability of the base alloy. A series of composites containing 1–5&#xa0;wt% total reinforcement was fabricated while maintaining a constant MWCNT:hBN ratio of 1:1 and systematically varying the GnP content. The effects of reinforcement loading on density, hardness, and tribological performance were examined through various characterization techniques. The results indicated significant improvement in both density and hardness, with the Al-3&#xa0;wt% M<sub>0.3</sub> G<sub>2.4</sub> B<sub>0.3</sub> composite exhibiting the highest density (94.99%) and hardness (378.64&#xa0;MPa). Tribological evaluation revealed a substantial reduction in wear rate and mass loss, reaching the lowest values of 0.48156&#xa0;mm<sup>3</sup>&#xa0;min<sup>−1</sup> and 0.003&#xa0;g, respectively, at 3&#xa0;wt% reinforcement. The enhanced performance is attributed to synergistic strengthening, improved load-bearing capacity, and solid-lubrication effects imparted by the hybrid nanofillers.</p>

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MWCNT-GnP-hBN Reinforced Al-Based Nanocomposites with Improved Tribological Behaviour for Automotive Applications

  • 期刊论文

  • 发表日期：

    2026年3月12日

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  • Ashutosh Das,
  • Smruti Rekha Swain,
  • Nityananda Sahoo,
  • Amlan Das,
  • Parth Patel,
  • Syed Nasimul Alam,
  • Soumitra Kumar Dinda,
  • Arka Ghosh

摘要

Aluminium (Al)-based hybrid nanocomposites reinforced with multi-walled carbon nanotubes (MWCNTs), graphite nanoplatelets (GnP), and hexagonal boron nitride (hBN) were developed to enhance the mechanical integrity and tribological stability of the base alloy. A series of composites containing 1–5 wt% total reinforcement was fabricated while maintaining a constant MWCNT:hBN ratio of 1:1 and systematically varying the GnP content. The effects of reinforcement loading on density, hardness, and tribological performance were examined through various characterization techniques. The results indicated significant improvement in both density and hardness, with the Al-3 wt% M0.3 G2.4 B0.3 composite exhibiting the highest density (94.99%) and hardness (378.64 MPa). Tribological evaluation revealed a substantial reduction in wear rate and mass loss, reaching the lowest values of 0.48156 mm3 min−1 and 0.003 g, respectively, at 3 wt% reinforcement. The enhanced performance is attributed to synergistic strengthening, improved load-bearing capacity, and solid-lubrication effects imparted by the hybrid nanofillers.