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2000
Volume 18, Issue 5
  • ISSN: 2212-7976
  • E-ISSN: 1874-477X

Abstract

Background

The present need for manufacturing industries is the creation of a new class of engineered materials with high specific properties. In this regard, nanocomposite materials have shown promising results compared to monolithic materials. Recent patents also show high mechanical and tribological properties.

Objective

The tribological and mechanical properties of graphene nanoplatelets (GNP)-reinforced aluminium 7075 nanocomposites are reported in this article with the objective of finding optimum properties.

Methods

The nanocomposites were successfully produced with the stir casting technique, a liquid metallurgy route with varying weight percentages of reinforcement composition of 0.5%, 1%, and 2%.

Results

The result showed an improvement in ultimate tensile strength of 69.5% and microhardness of 76.67% in contrast to the base alloy when it was cast. The wear rate was dropped significantly by 43% and 40% in 10 N and 20 N loading conditions with respect to as-cast conditions. Further, a decrease in the average coefficient of friction was observed from 0.680 to 0.565.

Conclusion

Graphene nanoplatelets came out as excellent reinforcement in the aluminium 7075 alloy, as they showed an impact on improved properties. The decreasing wear rate and coefficient of friction showed their self-lubricating nature. Additionally, X-ray diffraction (XRD) results and optical microstructure were also discussed.

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2024-04-15
2025-11-14

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/content/journals/meng/10.2174/0122127976305485240329053923
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Tribological and Mechanical Properties of Graphene Nano Platelets (GNP)-Reinforced Aluminium 7075 Nano Composites
Recent Patents on Mechanical Engineering 18, 508 (2025); https://doi.org/10.2174/0122127976305485240329053923
/content/journals/meng/10.2174/0122127976305485240329053923
/content/journals/meng/10.2174/0122127976305485240329053923
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  • Article Type:     Research Article
Keyword(s): Aluminium 7075; graphene nanoplatelets (GNP); mechanical properties; metal matrix nanocomposite (MMNCs); stir casting; wear

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