Investigation of 1,3-diketone and nano-copper additives for enhancing boundary lubrication performance

Jingsi, Wang and Dezhi, Teng and Jiawei, Fan and Xi, Zhang and Qihang, Cui and Li, Ke and Liew, Pay Jun (2025) Investigation of 1,3-diketone and nano-copper additives for enhancing boundary lubrication performance. Journal of Marine Science and Engineering, 13 (5). pp. 912-927. ISSN 2077-1312

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Abstract

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.

Item Type:	Article
Uncontrolled Keywords:	Lubricating oil, Diketone, nanoparticles, Tribofilm
Divisions:	Faculty Of Industrial And Manufacturing Technology And Engineering
Depositing User:	Norfaradilla Idayu Ab. Ghafar
Date Deposited:	13 Apr 2026 08:05
Last Modified:	13 Apr 2026 08:05
URI:	http://eprints.utem.edu.my/id/eprint/29655
Statistic Details:	View Download Statistic

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