REDUCING WEAR AND POWER CONSUMPTION IN TRIBOLOGICAL SYSTEMS USING CARBON-BASED NANO-LUBRICANTS: AN EXPERIMENTAL STUDY

Aimen Zeiny; 2.	Ward Arear; Qasim Hassan; Abbas Diwan; Luay Alansari

doi:10.30572/2018/KJE/160318

Authors

Aimen Zeiny Department of Mechanical Engineering, Faculty of Engineering, University of Kufa
Ward F. Arear Vocationale Training Center, Ministry of Labor and Social Affairs, Najaf, Iraq https://orcid.org/0000-0003-3816-8653
Qasim H. Hassan Department of Mechanical Power Techniques, Al-Najaf Technical Institute, Al-Furat Al-Awsat Technical University https://orcid.org/0000-0001-5724-4389
Abbas A. Diwan Nanotechnology and Advanced Material Research Unit, Faculty of Engineering, University of Kufa
Luay S. Alansari Mechanical Engineering Department, Faculty of Engineering, University of Kufa

DOI:

https://doi.org/10.30572/2018/KJE/160318

Keywords:

Hydrothermal carbonization, Carbon nanoparticle, Power consumption, Wear, Thermal conductivity, Viscosity

Abstract

This study presents a novel approach for producing carbon-based nano-lubricants, which avoids exposure to dry nanopowders usually used in production processes, thereby minimizing the health risks associated with nanoparticles. Furthermore, it adheres to green chemistry principles, as it does not involve toxic solvents or surfactants. In this approach, glucose, the most abundant and cost-effective monosaccharide in most crops, was subjected to hydrothermal carbonization to produce carbon-based aqueous nanofluid. The nanofluid was then mixed with a base oil (SAE 15W-40) at calculated volume ratios. The resulting mixtures were heated to evaporate the water, resulting in 5, 10, 15 and 20 g/l (i.e., 0.25 %, 0.5 %, 0.75 % and 1 % volumetric concentration) stable carbon-based nano-lubricants. In addition to the characterizations of the nano-lubricants, including viscosity and thermal conductivity, power consumption and wear measurements of a tribological system were conducted. The findings revealed linear relationships between nanoparticle concentration and viscosity, thermal conductivity, power reduction, and wear reduction. The maximum thermal conductivity enhancement and viscosity increase were 6 %, and 9.95 % for a 20 g/l nano-lubricant, respectively. Additionally, the power and the wear reductions were 16.66 % at full load, and 52.5 % for the 20 g/l nano-lubricant

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References

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