Title: Tribo-sustainability issues in recycled aluminium

Authors: R. Md.Nasir; Y.P. Liang; A.Y. Saad

Addresses: Nanofabrication and Functional Materials Research Group (NFM), School of Mechanical Engineering, Engineering Campus, Universiti Sains Malaysia (USM), Nibong Tebal, Penang 14300, Malaysia ' Nanofabrication and Functional Materials Research Group (NFM), School of Mechanical Engineering, Engineering Campus, Universiti Sains Malaysia (USM), Nibong Tebal, Penang 14300, Malaysia ' Nanofabrication and Functional Materials Research Group (NFM), School of Mechanical Engineering, Engineering Campus, Universiti Sains Malaysia (USM), Nibong Tebal, Penang 14300, Malaysia

Abstract: In the present paper, adding a small amount of magnesium (Mg) content on the dry sliding wear behaviour for recycled aluminium has been reported. Recycled aluminium composition, normal pressures and sliding distances on recycled aluminium at constant room temperature was also studied. The cast alloys and worn surfaces were characterised by SEM/EDX microanalysis and hardness test. The results indicate that, the wear rate of recycled aluminium increases with an increase in normal pressures and sliding distances in all the cases and decreases with 0.7wt.% Mg added to the recycled aluminium. This is due to the modification and solid solution strengthening and precipitation hardening. The worn surface study indicates that the formation of iron-rich oxide layer between the mating surfaces during sliding, improves sliding wear performance as the EDAX results show a reduction of ferrous content from abraded surfaces by more than 60%.

Keywords: dry sliding wear; friction; tribology; sustainability; sustainable development; recycled aluminium; microstructure; magnesium; materials recycling; wear rate; metal abrasion.

DOI: 10.1504/IJPTECH.2015.069969

International Journal of Precision Technology, 2015 Vol.5 No.1, pp.2 - 13

Received: 21 May 2014
Accepted: 29 Sep 2014
Published online: 18 Jun 2015 *

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