Volume 44, No 4, 2022, Pages 568-583

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Wear Characteristic of ZrO2/MGO as Lubricant in Different Rotating Speed


Dharmender Singh Saini ,
Surendra Pal Singh Matharu

DOI: 10.24874/ti.1315.06.22.09

Received: 7 June 2022
Revised: 3 August 2022
Accepted: 13 September 2022
Published: 15 December 2022


Proper rolling bearing lubricants and lubrication procedures are critical for delivering adequate bearing performance in critical situations. Main roles of Zirconium di oxide (ZrO2) nanoparticles in engine oil as lubricant additive for rolling bearing are reduction of wear and friction, extension of fatigue life, removal of frictional heat, and protection from corrosion. The present work investigates the tribological properties of SAE20W40 MGO and ZrO2 nano particles in SAE20W40 MGO oil for 0.4% concentration between steel/steel contact. In order to study wear under variable speed conditions, four-ball wear tests were carried out with chrome-plated steel balls (Grade E-52100), which were designed using 2 levels of factorial design of experiments (DOE). Nano-lubricant deterioration with and without ZrO2 were determined using empirical equations to project wear with reference to speed and ZrO2 concentration. Results presented that anti-wear properties of the SAE oil samples enhanced with ZrO2 irrespective of speed range.


Tribology, Zirconia, Nanofluid, DOE, Taguchi

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Volume 44
Number 4
December 2022

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18th International Conference on Tribology
17 19 May 2023
Kragujevac, Serbia