Preparation, characterization and tribological properties of polyalphaolefin with magnetic reduced graphene oxide/Fe3O4

Zhang, Qiangqiang; Wu, Bo; Song, Ruhong; Song, Hui; Zhang, Jun; Hu, Xianguo

doi:10.1016/j.triboint.2019.105952

Cited by 57 publications

(22 citation statements)

References 45 publications

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“…These particles could fill the friction contact area and repair the worn surface. This result is in agreement with the work conducted by Zhang et al 17 and Huang et al 26 Therefore, when BDS is present in the lubricating oil, the tribofilm and the surface of the engine parts may be directly abraded, increasing the wear. 36 The anti-wear properties could be significantly improved by adding rGO@Fe 3 O 4 in the PAO6 base oil containing BDS.…”

Section: Analysis Of the Tribological Mechanismsupporting

confidence: 92%

“…Many graphene/metal oxide composites have been proposed to further enhance the lubrication performance of graphene. Zhang et al 17 and Wang et al 18 observed that nanoparticles contribute to inhibit graphene aggregation. Song et al 19 observed that the lubricating effect of the a-Fe 2 O 3 nanorod/graphene oxide (GO) was superior to that of only a-Fe 2 O 3 or GO when used as additives in paraffin oil.…”

Section: Introductionmentioning

confidence: 99%

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Effect of rGO@Fe₃O₄ on the tribological behavior of biodiesel soot-contaminated polyalphaolefin

Zhang

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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The biodiesel soot interacts with engine oil and causes the wear of engine parts. In this study, we present the effects of rGO@Fe3O4 on the tribological behavior of the biodiesel soot-contaminated lubricating oil using a UMT-2 multifunction friction tester to ensure active control with respect to the role of biodiesel soot in engine oil. Three-dimensional laser scanning microscopy, field-emission scanning electron microscopy, and Raman spectroscopy were used to analyze the worn surfaces of the lower disc. rGO@Fe3O4 reduced the wear of the GCr15 steel specimens as an additive in the polyalphaolefin-6 base oil containing biodiesel soot. The tribological mechanism can be attributed to the formation of a protecting layer in the presence of rGO@Fe3O4 and the ability of the exfoliated Fe3O4 particles to repair the friction surfaces, enhancing the anti-wear property of polyalphaolefin-6 containing biodiesel soot.

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Section: Analysis Of the Tribological Mechanismsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Effect of rGO@Fe₃O₄ on the tribological behavior of biodiesel soot-contaminated polyalphaolefin

Zhang

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…Zhou et al [26] analyzed the tribological behavior of coated Fe 3 O 4 magnetic nanoparticles (particle size around 10 nm) with oleic acid dispersed in a liquid paraffin, showing that the coefficient of friction and the wear can be effectively reduced up to 25% and 65%, respectively, with the addition of the nanoparticles. Recently, Zhang et al [27] studied the tribological performance of PAO 6 (a polyalphaolefin, whose kinematic viscosity at T = 373.15 K is around 6 mm 2 s -1 ) with graphene oxide/Fe 3 O 4 nanocomposites as additives obtaining reductions of 7% and 52% in friction and wear, respectively, in comparison to PAO 6.…”

Section: Introductionmentioning

confidence: 99%

Tribological Behavior of Nanolubricants Based on Coated Magnetic Nanoparticles and Trimethylolpropane Trioleate Base Oil

et al. 2020

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The main task of this work is to study the tribological performance of nanolubricants formed by trimethylolpropane trioleate (TMPTO) base oil with magnetic nanoparticles coated with oleic acid: Fe3O4 of two sizes 6.3 nm and 10 nm, and Nd alloy compound of 19 nm. Coated nanoparticles (NPs) were synthesized via chemical co-precipitation or thermal decomposition by adsorption with oleic acid in the same step. Three nanodispersions of TMPTO of 0.015 wt% of each NP were prepared, which were stable for at least 11 months. Two different types of tribological tests were carried out: pure sliding conditions and rolling conditions (5% slide to roll ratio). With the aim of analyzing the wear by means of the wear scar diameter (WSD), the wear track depth and the volume of the wear track produced after the first type of the tribological tests, a 3D optical profiler was used. The best tribological performance was found for the Nd alloy compound nanodispersion, with reductions of 29% and 67% in friction and WSD, respectively, in comparison with TMPTO. On the other hand, rolling conditions tests were utilized to study friction and film thickness of nanolubricants, determining that Fe3O4 (6.3 nm) nanolubricant reduces friction in comparison to TMPTO.

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“…66 Zhang et al. 67 dispersed magnetic r-GO/Fe 3 O 4 composite in polyalfaolefin (PAO 6) oils and investigated the friction reduction capability of these r-GO composites. It was reported that the presence of r-GO/Fe 3 O 4 particles improved the antiwear properties of PAO 6.…”

Section: Introductionmentioning

confidence: 99%

Tribological analyses of a new optimized gearbox biodegradable lubricant blended with reduced graphene oxide nanoparticles

Bhaumik

Kamaraj

Paleu

2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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The current work aims to develop a biodegradable lubricant by adding different volume percentages of cashew nut shell liquid (CNSL) in neat castor oil (NCO) and investigating its possibility as replacement to non-biodegradable mineral oil (commercial mineral oil) in industrial applications. The blend exhibiting better tribological properties was additived with different weight percentages of reduced graphene oxide (r-GO) nano-platelets and further tribological tests were performed. The performance of 40%CNSL+NCO was 45.8% better than commercial mineral oil, and with the addition of the 0.5% r-GO in the blend, the performance was improved by 61.7% than the commercial mineral oil. Finally, the novel biodegradable mixture blended with nanoparticles was employed as a lubricant in a gearbox, proving the superiority of the biodegradable lubricant over the commercial mineral oil.

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Preparation, characterization and tribological properties of polyalphaolefin with magnetic reduced graphene oxide/Fe3O4

Cited by 57 publications

References 45 publications

Effect of rGO@Fe₃O₄ on the tribological behavior of biodiesel soot-contaminated polyalphaolefin

Effect of rGO@Fe₃O₄ on the tribological behavior of biodiesel soot-contaminated polyalphaolefin

Tribological Behavior of Nanolubricants Based on Coated Magnetic Nanoparticles and Trimethylolpropane Trioleate Base Oil

Tribological analyses of a new optimized gearbox biodegradable lubricant blended with reduced graphene oxide nanoparticles

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Preparation, characterization and tribological properties of polyalphaolefin with magnetic reduced graphene oxide/Fe3O4

Cited by 57 publications

References 45 publications

Effect of rGO@Fe3O4 on the tribological behavior of biodiesel soot-contaminated polyalphaolefin

Effect of rGO@Fe3O4 on the tribological behavior of biodiesel soot-contaminated polyalphaolefin

Tribological Behavior of Nanolubricants Based on Coated Magnetic Nanoparticles and Trimethylolpropane Trioleate Base Oil

Tribological analyses of a new optimized gearbox biodegradable lubricant blended with reduced graphene oxide nanoparticles

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Effect of rGO@Fe₃O₄ on the tribological behavior of biodiesel soot-contaminated polyalphaolefin

Effect of rGO@Fe₃O₄ on the tribological behavior of biodiesel soot-contaminated polyalphaolefin