期刊
SURFACES AND INTERFACES
卷 24, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.surfin.2021.101127
关键词
Nanoparticles; Engine oil; Boundary lubrication; Wear and friction; Tribochemistry
类别
资金
- State Key Laboratory of Engine Reliability at Weichai Power Co. Ltd. [2019-175]
- Australian Research Council (ARC) - Linkage, Infrastructure,Equipment and Facilities (LIEF) [LE160100063, LE120100104]
The study demonstrated that the addition of oxide nanoparticles improved the lubricity and wear resistance of engine oil, with Al2O3 nanoparticles showing superior tribological capability compared to other nanoparticles. The differentials of wearing mechanism, tribofilm, and interface hierarchy were clarified through morphological observation and compositional characterization.
The oxide nanoparticles have been claimed as the lubricant additive, which are capable of alleviating wear and reducing friction for the engine components. However, how oxide nanoparticles speficially behave together with the representative additive (Zinc dialkyl dithiophosphate, ZDDP) in the formulated engine oil, is still poorly understood. The results well revealed that the addition of oxide nanoparticles provided the improved lubricity of engine oil and significant resistance to wear. The Al2O3 nanoparticle specifically rendered superior tribological capability compared with other nanoparticles. Furthermore, the differentials of wearing mechanism, tribofilm and interface hierarchy were clarified by means of the morphological observation and compositional characterization. This study allowed us to understand the interacting mechanism when nanoparticles being involved within commercial engine oil was presenting between the sliding contact.
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