Investigation of 1,3-diketone and nano-copper additives for enhancing boundary lubrication performance
In this work, 1,3-diketone synthesized via the Claisen condensation method and nano-copper particles modified by the Brust–Schiffrin method were added into a commercial marine medium-speed diesel engine cylinder piston oil to evaluate their effects on boundary lubrication performance. Friction an...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | en |
| Published: |
Multidisciplinary Digital Publishing Institute (MDPI)
2025
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| Online Access: | http://eprints.utem.edu.my/id/eprint/29655/2/01178100720252241491903.pdf http://eprints.utem.edu.my/id/eprint/29655/ https://www.mdpi.com/2077-1312/13/5/912 |
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| Summary: | In this work, 1,3-diketone synthesized via the Claisen condensation method
and nano-copper particles modified by the Brust–Schiffrin method were added into a
commercial marine medium-speed diesel engine cylinder piston oil to evaluate their effects
on boundary lubrication performance. Friction and wear tests conducted on CKS-coated
piston ring and cast-iron cylinder liner samples demonstrated significant reductions in both
friction and wear with the addition of 1,3-diketone and nano-copper particles. Compared
to the original oil without additives, the friction force was reduced by up to 16.7%, while
the wear of the piston ring and cylinder liner was decreased by up to 21.6% and 15.1% at
150 ◦C, respectively. A worn surface analysis indicated that the addition of 1,3-diketone and
functionalized nano-copper particles influenced the depolymerization and tribo-chemical
reactions of the anti-wear additive ZDDP (zinc dialkyldithiophosphate) in the original
engine oil. This modification enhanced the oil’s anti-friction and anti-wear properties,
offering valuable insights into the development of eco-friendly lubricants for energyefficient systems. |
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