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Wear behaviour of copper/carbon nanotubes

Nor Shamimi Shaari (Centre for Advanced Materials Research (CAMAR), Faculty of Mechanical Engineering, Universiti Teknologi MARA, Shah Alam, Malaysia)
Jamaliah Md Said (Faculty of Mechanical Engineering, Universiti Teknologi MARA, Pasir Gudang, Malaysia)
Aidah Jumahat (Centre for Advanced Materials Research (CAMAR), Faculty of Mechanical Engineering, Universiti Teknologi MARA, Shah Alam, Malaysia)
Muhammad Hussain Ismail (Centre for Advanced Materials Research (CAMAR), Faculty of Mechanical Engineering, Universiti Teknologi MARA, Shah Alam, Malaysia)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 8 May 2017

Abstract

Purpose

The purpose of this paper is to study the wear behaviour of copper matrix composites reinforced with carbon nanotubes (CNTs) prepared by powder metallurgy route.

Design/methodology/approach

The CNTs were treated by sulphuric acid and nitric acid to deagglomerate the CNTs prior mixing with copper powder. The composites comprised 0 to 4 Vol.% pristine CNTs (PCNTs) and also after acid-treated CNTs (ACNTs). The optimum value (pure Cu, 3 Vol.% PCNTs, 3 Vol.% ACNTs) evaluated by micro-hardness test was selected for wear test analysis.

Findings

The results showed that the enhancement of hardness, weight loss, coefficient of friction, wear depth and surface roughness (Ra) was due to the effect of homogenous distribution of ACNTs in Cu matrix and significant bonding compared to pure Cu and Cu-reinforced PCNTs. The scanning electron microscopy micrograph of worn surfaces and wear depth of the specimens also showed that the addition of ACNTs in Cu resulted in better wear performances.

Originality/value

CNTs were treated prior processing to improve hardness and wear properties of Cu/CNTs composites.

Keywords

Acknowledgements

This work was supported by Fundamental Research Grant Award (600-RMI/FRGS 5/3 (41/2015)) for Universiti Teknologi MARA, Malaysia.

Citation

Shaari, N.S., Md Said, J., Jumahat, A. and Ismail, M.H. (2017), "Wear behaviour of copper/carbon nanotubes", Industrial Lubrication and Tribology, Vol. 69 No. 3, pp. 342-347. https://doi.org/10.1108/ILT-09-2016-0198

Publisher

:

Emerald Publishing Limited

Copyright © 2017, Emerald Publishing Limited