Tribological behaviour of aluminium/boron carbide (B₄C)/graphite (Gr) hybrid metal matrix composite under dry sliding motion by using ANOVA
by V. Suresh; N. Hariharan; S. Paramesh; M. Prasath Kumar; P. Arun Prasath
International Journal of Materials and Product Technology (IJMPT), Vol. 53, No. 3/4, 2016

Abstract: The modern study deals with the fabrication of aluminium/boron carbide/graphite hybrid metal matrix composite and investigation on its tribological behaviour. The composite incorporated 3 wt% of B₄C and 4 wt% of Gr particles with a size 200 mesh fabricated through stir casting. The microstructure of this composite inspected and uniform distribution of reinforced particles in the matrix observed. Wear experiments conducted on pin-on-disc tester based on Taguchi's L₉ orthogonal arrays using three process parameters such as load, sliding velocity and distance; each varied for three levels. Loads of 20 N, 40 N, 60 N; velocities of 2 m/s, 4 m/s, 6 m/s and distances of 1,000 m, 2,000 m, 3,000 m considered for analysing the wear behaviour of composite. The main parameters originated out using signal-to-noise ratio by selecting 'smaller-the-better' characteristics for wear rates and COF. Worn out surfaces of the composite specimen were analysed using SEM for predicting the wear mechanism. The materials with ALMMCs have better wear characteristics.

Online publication date: Thu, 22-Sep-2016

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