Tribological characterisation of magnesium matrix nanocomposites: A review

Sudip Banerjee,J Paulo Davim,Prasanta Sahoo

doi:10.1177/16878140211009025

Sudip Banerjee, J Paulo Davim + Show 1 more

Open Access

https://doi.org/10.1177/16878140211009025

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Abstract

Magnesium matrix nanocomposites (Mg-MNCs) are high grade materials widely used in aerospace, electronics, biomedical and automotive sectors for high strength to weight ratio, excellent sustainability and superior mechanical and tribological characteristics. Basic properties of Mg-MNCs rely on type and amount of reinforcement and fabrication process. Current study reviews existing literatures to explore contribution of different parameters on tribological properties of Mg-MNCs. Effects of particle size and amount of different reinforcements like SiC, WC, Al2O3, TiB2, CNT, graphene nano platelets (GNP), graphite on tribological behaviour are discussed. Incorporation of nanoparticles generally enhances properties. Role of different fabrication processes like stir casting (SC), ultrasonic treatment casting (UST), disintegrated melt deposition (DMD), friction stir processing (FSP) on wear and friction behaviour of Mg-MNCs is also reviewed. Contributions of different tribological process parameters (sliding speed, load and sliding distance) on wear, friction and wear mechanism are also examined.

Highlights

Composite materials normally harmonize properties of matrix phase and reinforcement phase
Improved wear resistance was observed for AZ31-B4C-ZrO2 hybrid composite compared to AZ31-ZrO2.COF of composites having B4C, WC and ZrO2 yielded around 22%, 38% and 62% reduction in COF respectively
Effect of incorporation of small amount (2 wt.%) of nano-metric (100 nm) reinforcement (Al2O3) in pure Mg and AZ31 alloy through stir casting process on mechanical and tribological behaviour using pin on disc tribotester was examined by HabibnejadKorayem et al.[29]

Summary

Introduction

Composite materials normally harmonize properties of matrix phase and reinforcement phase. Effect of incorporation of small amount (2 wt.%) of nano-metric (100 nm) reinforcement (Al2O3) in pure Mg and AZ31 alloy through stir casting process on mechanical and tribological behaviour using pin on disc tribotester was examined by HabibnejadKorayem et al.[29] Experiments were performed considering different parameters, that is, normal stress (0.5, 1, 1.5 MPa), load (12, 24 and 36 N), sliding speed (0.5 and 1.5 m/s) and sliding distance (2000 m). Wear response of AZ61– 1SiC nanocomposite processed through ultrasonic method followed by extrusion was evaluated considering varying load (10, 30, 50, 100 and 120 N) and sliding speed (0.5 and 1.0 m/s).[69] Composites possessed lower wear rate than matrix alloy. Delamination along with thermal softening was found as controlling wear mechanism

Summary

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