Effect of h-BN solid nano lubricant on the dry sliding wear behaviour of Al-B4C nanocomposites

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Effect of h-BN solid nano lubricant on the dry sliding wear behaviour of Al-B4C nanocomposites

Journal Title: Archives of Materials Science and Engineering - Year 2016, Vol 77, Issue 1

Abstract

Purpose: In this paper, three composites with different B4C content and fixed h-BNnanoparticles reinforced aluminium composites were fabricated through ultrasonic cavitationassisted casting. The role of the B4C and h-BN nanoparticles content on the mechanicaland tribological properties of the aluminium composites was evaluated. This study presentsthe report on characterizion and evaluation of mechanical properties of h-BN and B4Cnanoparticles reinforced aluminium composites.Design/methodology/approach: Al-B4C-h-BN composites are fabricated using stir andultrasonic cavitation-assisted casting processes. The prepared composites are characterizedusing X-ray diffraction, Scanning Electron Microscopy and Energy Dispersive Spectroscopy.The dry sliding wear behaviour of the Al-B4C-h-BN composites are investigated usingpin-on-disc wear test.Findings: The results of microstructural study reveal that uniform distribution, grainrefinement and low porosity in composite specimens. The wear properties of the hybridnanocomposites, containing 4 wt% B4C and 2 wt. % h-BN, exhibit the superior wearresistance properties as compared to unreinforced aluminium matrix.Practical implications: The interest in use of hexagonal boron nitride nanoparticles(h-BN) as solid nano lubricant for aluminium has been growing considerably due to its selflubricating properties

Authors and Affiliations

R. Harichandran, N. Selvakumar

Keywords

Aluminium nanocomposite B4C and h-BN nanoparticles ultrasonic dispersion Dry sliding wear behaviour

EP ID EP189874
DOI 10.5604/18972764.1223976
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