Study on Dry Sliding Wear and Friction Behaviour of Al7068/Si3N4/BN Hybrid Composites

Kumar Subramanian; Sakthivel Murugesan; Dhanesh G. Mohan; Jacek Tomków

doi:10.3390/ma14216560

Study on Dry Sliding Wear and Friction Behaviour of Al7068/Si3N4/BN Hybrid Composites

Abstract

Hybrid aluminium metal matrix composites have the potential to replace single reinforced aluminium metal matrix composites due to improved properties. Moreover, tribological performance is critical for these composites, as they have extensive application areas, such as the automotive, aerospace, marine and defence industries. The present work aims to establish the tribological characteristics of Al7068/Si3N4/BN hybrid metal matrix composites prepared by stir casting route and studied using a pin-on-disc apparatus under dry sliding conditions. The hybrid composite samples were prepared at various weight percentages (0, 5, 10) of Si3N4 and BN particles. To investigate the tribological performance of the prepared composites, the wear experiments were conducted by varying the load (20, 40 and 60 N), sliding velocity (1.5, 2.5 and 3.5 m/s) and sliding distance (500, 1000 and 1500 m). Wear experimental runs were carried out based on the plan of experiments proposed by Taguchi. The minimum wear rate was found with the composite material reinforced with 10 wt. % of Si3N4 and 5 wt. % of BN. Analysis of Variance (ANOVA) was employed to analyse the effect of process parameters on wear rate and coefficient of friction (COF). The ANOVA test revealed that the weight fraction of Si3N4 has more of a contribution percentage (36.60%) on wear rate, and load has more of a contribution percentage (29.73%) on COF. The worn-out surface of the wear test specimens was studied using its corresponding SEM micrograph and correlated with the dry sliding wear experiment results.

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Authors (4)

Kumar Subramanian
- Government College of Technology, Coimbatore, India
Sakthivel Murugesan
- Anna University Regional Campus Coimbatore, Coimbatore, India
Dhanesh G. Mohan Dr.
- Shandong University, Jinan, China
Jacek Tomków dr hab. inż.

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DOI:: Digital Object Identifier (open in new tab) 10.3390/ma14216560
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Articles

Type:

artykuły w czasopismach

Published in:

Materials no. 14,
ISSN: 1996-1944

Language:

English

Publication year:

2021

Bibliographic description:

Subramanian K., Murugesan S., Mohan D. G., Tomków J.: Study on Dry Sliding Wear and Friction Behaviour of Al7068/Si3N4/BN Hybrid Composites// Materials -,iss. 14(21) (2021), s.6560-6560

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