REDUCING WEAR AND POWER CONSUMPTION IN TRIBOLOGICAL SYSTEMS USING CARBON-BASED NANO-LUBRICANTS: AN EXPERIMENTAL STUDY
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 inv...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Faculty of Engineering, University of Kufa
2025-07-01
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| Series: | Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ |
| Subjects: | |
| Online Access: | https://journal.uokufa.edu.iq/index.php/kje/article/view/17353 |
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| Summary: | 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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| ISSN: | 2071-5528 2523-0018 |