Tribological Behaviour of Neem Oil with and without Graphene Nanoplatelets Using Four-Ball Tester

B. Suresha; G. Hemanth; Apurva Rakesh; K. M. Adarsh

doi:10.1155/2020/1984931

Advances in Tribology (Jan 2020)

Tribological Behaviour of Neem Oil with and without Graphene Nanoplatelets Using Four-Ball Tester

B. Suresha,
G. Hemanth,
Apurva Rakesh,
K. M. Adarsh

Affiliations

B. Suresha: Department of Mechanical Engineering, The National Institute of Engineering, Mysore 570008, India
G. Hemanth: Department of Mechanical Engineering, The National Institute of Engineering, Mysore 570008, India
Apurva Rakesh: Department of Mechanical Engineering, The National Institute of Engineering, Mysore 570008, India
K. M. Adarsh: Department of Mechanical Engineering, The National Institute of Engineering, Mysore 570008, India

DOI: https://doi.org/10.1155/2020/1984931
Journal volume & issue: Vol. 2020

Abstract

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The present work was aimed to study the friction and wear behaviour of graphene nanoplatelets (GNPs) under extreme pressure conditions as an anti-weld additive for neem oil. The effect of neem oil, blended with various loading of GNPs on the friction and wear characteristics has been investigated. From the experimental results, it was found that 1 wt.% of GNPs in neem oil showed the least coefficient of friction and smoother wear scar diameter. The extreme pressure test was performed on neem oil with and without GNPs as per ASTM standards. The extreme pressure test results indicated the improvement in seizure load of neem oil by 27.8% at 0.5 wt.% of GNPs as compared to pure neem oil. Optical microscopy of worn steel ball surface revealed the pit formation and the formation of wedge cutting edge in GNPs modified neem oil.

Published in Advances in Tribology

ISSN: 1687-5915 (Print); 1687-5923 (Online)
Publisher: Wiley
Country of publisher: United Kingdom
LCC subjects: Technology: Mechanical engineering and machinery
Website: https://onlinelibrary.wiley.com/journal/7274

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