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Rheological and tribological behaviour of lubricating oils containing platelet MoS2 nanoparticles
Alternative TitleJ. Nanopart. Res.
Wan, Qingming1,2; Jin, Yi1; Sun, Pengcheng1; Ding, Yulong1,3
2014-04-08
Source PublicationJOURNAL OF NANOPARTICLE RESEARCH
ISSN1388-0764
Volume16Issue:5Pages:9
AbstractThis work concerns rheological and frictional behaviour of lubricating oils containing platelet molybdenum disulfide (MoS2) nanoparticles (average diameter similar to 50 nm; single layer thickness similar to 3 nm). Stable nano-MoS2 lubricants were formulated and measured for their rheological behaviour and tribological performance. Rheological experiments showed that the nano-MoS2 oils were non-Newtonian following the Bingham plastic fluid model. The viscosity data fitted the classic Hinch-Leal (H-L) model if an agglomeration factor of 1.72 was introduced. Tribological experiments indicated that the use of MoS2 nanoparticles could enhance significantly the tribological performance of the base lubricating oil (reduced frictional coefficient, reduced surface wear and increased stability). Scanning electron microscopy, laser confocal microscope and x-ray energy dispersive spectroscopy analyses suggested that the reduced frictional coefficient and surface wear be associated with surface patching effects. Such patching effects were shown to depend on the concentration of MoS2 nanoparticles, and an effective patching required a concentration over approximately 1 wt%. The increased stability could be attributed to the enhanced heat transfer and lubricating oil film strength due to the presence of nanoparticles.; This work concerns rheological and frictional behaviour of lubricating oils containing platelet molybdenum disulfide (MoS2) nanoparticles (average diameter similar to 50 nm; single layer thickness similar to 3 nm). Stable nano-MoS2 lubricants were formulated and measured for their rheological behaviour and tribological performance. Rheological experiments showed that the nano-MoS2 oils were non-Newtonian following the Bingham plastic fluid model. The viscosity data fitted the classic Hinch-Leal (H-L) model if an agglomeration factor of 1.72 was introduced. Tribological experiments indicated that the use of MoS2 nanoparticles could enhance significantly the tribological performance of the base lubricating oil (reduced frictional coefficient, reduced surface wear and increased stability). Scanning electron microscopy, laser confocal microscope and x-ray energy dispersive spectroscopy analyses suggested that the reduced frictional coefficient and surface wear be associated with surface patching effects. Such patching effects were shown to depend on the concentration of MoS2 nanoparticles, and an effective patching required a concentration over approximately 1 wt%. The increased stability could be attributed to the enhanced heat transfer and lubricating oil film strength due to the presence of nanoparticles.
KeywordLubricating Oil Mos2 Nanoparticles Rheological Behaviour Tribological Behaviour Surface Patching Colloids
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1007/s11051-014-2386-2
URL查看原文
Indexed BySCI
Language英语
WOS KeywordMOLECULAR DIMENSIONS ; NANO-OIL ; PERFORMANCE ; NANOFLUIDS ; PARTICLES ; ADDITIVES ; FRICTION ; MORPHOLOGY ; NANOTUBES ; PARAFFIN
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS SubjectChemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000334447800003
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Cited Times:20[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/10968
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Birmingham, Sch Chem Engn, Birmingham B15 2TT, W Midlands, England
Recommended Citation
GB/T 7714
Wan, Qingming,Jin, Yi,Sun, Pengcheng,et al. Rheological and tribological behaviour of lubricating oils containing platelet MoS2 nanoparticles[J]. JOURNAL OF NANOPARTICLE RESEARCH,2014,16(5):9.
APA Wan, Qingming,Jin, Yi,Sun, Pengcheng,&Ding, Yulong.(2014).Rheological and tribological behaviour of lubricating oils containing platelet MoS2 nanoparticles.JOURNAL OF NANOPARTICLE RESEARCH,16(5),9.
MLA Wan, Qingming,et al."Rheological and tribological behaviour of lubricating oils containing platelet MoS2 nanoparticles".JOURNAL OF NANOPARTICLE RESEARCH 16.5(2014):9.
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