Tribological performance of electric transmission fluid enhanced with silicon dioxide and graphene nanoparticles: Impact of concentration on wear reduction and frictional behavior

Tribological performance of electric transmission fluid enhanced with silicon dioxide and graphene nanoparticles: Impact of concentration on wear reduction and frictional behavior

This study investigates the tribological properties of electric transmission fluid (ETF) enhanced with silicon dioxide nanoparticles modified with stearic acid (SiO2-SA) and graphene nanoparticles across varying concentrations (0.10 %, 0.20 %, and 0.30 % wt %). Tribological assessments were conducte...

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Bibliographic Details
Main Authors: Jijo Jose, R. Anish, George Mammen, Ashish Mathew Jose, Jayakrishnan M. Nair, Anna M. Abraham, Soney C. George, C.M. Twinkle
Format: Article
Language:English
Published: Elsevier 2025-05-01
Series:Results in Surfaces and Interfaces
Subjects:
Nano-particle
Wear
Lubrication
Material loss
Tribological mechanism
Online Access:http://www.sciencedirect.com/science/article/pii/S2666845925001047
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Summary:This study investigates the tribological properties of electric transmission fluid (ETF) enhanced with silicon dioxide nanoparticles modified with stearic acid (SiO2-SA) and graphene nanoparticles across varying concentrations (0.10 %, 0.20 %, and 0.30 % wt %). Tribological assessments were conducted at 120 °C under pure sliding conditions. The results indicate that all nano-lubricants exhibit superior anti-wear capabilities compared to conventional ETFs. Optimal friction reduction and minimized material loss were observed at 0.10 wt % graphene and 0.30 wt % SiO2-SA, with the combination yielding the best performance. The observed tribological improvements stem from multiple mechanisms, including the formation of a protective tribofilm, nano-polishing effects, and the adsorption of nanoparticles onto the contact surfaces. The nanoparticles act as friction and wear modifiers by reducing asperity contact, enhancing load-bearing capacity, and forming a low-shear-strength lubricating layer. This synergistic effect significantly contributes to friction reduction and wear mitigation, thereby enhancing the longevity and efficiency of ETF formulations for electric vehicle applications.
ISSN:2666-8459

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