The Rheology of Nanolubricants Based on Fe2O3, Al2O3, and ZnO Oxide Nanoparticles: A Comparative Study

Document Type : Regular Article

Authors

1 Faculty of Applied Sciences, Synthesis and Catalysis Laboratory LSCT, Ibn-Khaldoun University, Tiaret BP P 78 Zaâroura 14000, Tiaret, Algeria

2 Department of Technology, FIMA Laboratory, Theniet El-Had Road 44225, University of Khemis Miliana, Ain Defla, Algeria

10.22036/pcr.2022.328709.2027

Abstract

In the present article, a comparative study of the rheological characteristics of nano-lubricants based on Fe2O3, Al2O3 and ZnO nanoparticles is carried out. The base fluid used is 20W40 engine oil. The nanofluid samples were prepared in the solid volume fractions (0.25%; 0.50%; 0.75% and 1%). The measurements have been performed at different temperatures, ranging between 20 °C and 60 °C and at shear rates ranging from 100 s-1 to 300 s-1. The results obtained have shown that nanofluids based on Fe2O3 and ZnO nanoparticles exhibit a non Newtonian shear thinning behaviour while the nanofluid based on Al2O3 nanoparticle exhibit a Newtonian behaviour. The Al2O3/oil nanofluid has a lower dynamic viscosity than Fe2O3/oil and ZnO/oil nanofluids. The increase in temperature leads to a reduction of more than 80% in viscosity for all nanofluids. On the other hand, the increase of the nanoparticles volume concentration clearly improves the dynamic viscosity.

Graphical Abstract

The Rheology of Nanolubricants Based on Fe2O3, Al2O3, and ZnO Oxide Nanoparticles: A Comparative Study

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History

  • Receive Date: 28 February 2022
  • Revise Date: 07 May 2022
  • Accept Date: 13 May 2022

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