Experimental comparison between ZnO and MoS2 nanoparticles as additives on performance of diesel oil-based nano lubricant

Mousavi, Seyed Borhan; Heris, Saeed Zeinali; Estellé, Patrice

doi:10.1038/s41598-020-62830-1

Cited by 188 publications

(112 citation statements)

References 69 publications

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“…The current observations also push the understanding of MoS 2 ’s behavior in terms of processing–structure–property relationships towards robust industrial applications. The synthesis and deposition of MoS 2 –GO using a liquid phase just as a carrier media is the prime novelity of this study, in comparision to previous reports where either MoS 2 , GO or a combination were used in oil based suspensions 42 – 46 . Although the orientation of individual MoS 2 –GO flakes was completely stochastic due to the nature of the spray coating technique, the encapsulation at layer-level must have been very effective that prevented coating degradation when tested in ambient atmospheric conditions at high loads and sliding speeds.…”

Section: Resultsmentioning

confidence: 66%

Towards developing robust solid lubricant operable in multifarious environments

Ayyagari

Mutyala

Sumant

2020

Sci Rep

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Conventional solid lubricants such as MoS2, graphite, or diamond-like carbon films demonstrate excellent tribological performance but only in specific environments due to their inherent materials properties. This limitation prohibits using these solid lubricants in environments that change dynamically. This study presents the results of a novel solid lubricant that was developed using a combination of solution-processed 2D-molybdenum disulfide and graphene-oxide (GO) that can be deposited on to stainless steel substrates using a simple spray-coating technique and show exceptional performance in multifarious environments namely, ambient (humid) atmosphere, dry nitrogen, and vacuum. The tribological performance of the coatings was evaluated using a ball-on-disc sliding test and demonstrated an excellent wear/friction performance in all environments and coating survived even after 44 km of linear sliding. Transmission electron microscopy and Raman spectroscopy analysis of the tribolayers suggested in-operando friction-induced re-orientation of MoS2 layers that were protected by GO layers and, an absence of MoOx peaks indicate a strong resistance to intercalation with moisture and oxygen. The simplicity and robustness of the hybrid MoS2–GO solid lubricant in mitigating wear-friction behavior of steel-on-steel tribopair in a multifarious environment is a game-changing and is promising for various applications.

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Section: Resultsmentioning

confidence: 66%

Towards developing robust solid lubricant operable in multifarious environments

Ayyagari

Mutyala

Sumant

2020

Sci Rep

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“…Consequently, in this article, the impact of ZnO and MoS 2 NPs on viscosity, tribological, and physicochemical qualities were studied. It is worth stating that this work is a continuation of the previous one [72] to complete the characterization and demonstrate the potential of nano-lubricants considering different measurements.…”

Section: Introductionmentioning

confidence: 86%

Viscosity, tribological and physicochemical features of ZnO and MoS2 diesel oil-based nanofluids: An experimental study

Mousavi

Heris

Estellé

2021

Fuel

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117

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In this research, two different diesel oil-based nanofluids were prepared and the influence of temperature and nanoparticle content were examined on viscosity, tribological, and physicochemical features of diesel oil. The kinematic viscosity of samples was experimentally evaluated based on standard ASTM D445. The greatest viscosity increment was diagnosed at 0.7 wt.% and 100°C for both of the prepared nanofluids. The anti-friction behavior of the nanofluids was studied utilizing a pin-on-disc tribometer. The acquired outcomes revealed that ZnO and MoS 2 nanoparticles (NPs) could promote the tribological characteristics of pure diesel oil. By analyzing the friction coefficient values and line roughness of the wear surface (Ra), an optimal concentration of ZnO and MoS 2 nanoparticles (NPs) were found to be around 0.4 wt.% and 0.7 wt.%, respectively. The friction factor and pumping power were also measured at diverse content of nanoparticles and flow rates showing that the pumping power was enhanced by the incorporation of nanoparticles.

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“…The mean diameter of the MWCNT in the pure lubricant was higher than TiO2 nanoparticles. According to research articles [38][39][40], the addition of nano additives in the pure lubricant reason for increases the size of the nano additives in the lubricant.…”

Section: Characteristics Analysismentioning

confidence: 99%

Comparison between multi-walled carbon nanotubes and Titanium dioxide nanoparticles as additives on performance of Turbine meter oil nano lubricant

Pourpasha

Heris

Mohammadfam

2020

Preprint

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This research work purpose to compare the impact of the mass fraction of multi-walled carbon nanotubes (MWCNTs) and Titanium dioxide (TiO2) nano additive on the tribological and thermophysical attributes of turbine meter oil. These attributes are including the average friction coefficient, pressure drop, wear, flash point, pour point, relative viscosity, kinematics viscosity, and viscosity index. Also, the pressure drops and the average friction coefficient inside the copper tube were simulated and compared with experimental results. In this study, for the synthesis of nano lubricants from turbine meter oil as a pure fluid and from MWCNTs and TiO2 as nano additives in the mass fraction of 0.05, 0.1, 0.2, 0.3, and 0.4 wt.% and from oleic acid and Triton x100 as surfactants were utilized. The diameter of MWCNTs and TiO2 nano additives were ranging from 5 nm to 16.1 nm and 7.9 nm to 13.9 nm, respectively. The average particle size of TiO2 and MWCNTs nano additives in 0.4 wt.% in the pure lubricant were 221 nm and 320 nm, respectively. The results illustrated that the wear depth of copper pins in the presence of nano lubricant with 0.4 wt.% of MWCNTs and 0.1 wt.% TiO2 was improved by 88.26% and 71.43%, respectively. Nano lubricants with 0.3 wt.% of TiO2 and 0.4 wt.% of MWCNTs nano additives illustrated the maximum improvement in the flash point temperature with enhancement 4 °C and 10 °C. By increasing of 0.3 wt.% of TiO2 and MWCNTs into the pure oil caused to improve in viscosity index with enhancement 6.68% and 2.43% compared to the pure lubricant, respectively. The simulation data and experimental data for the pressure drop were closer together and indicated a minor error that the maximum error is less than 10%.

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Experimental comparison between ZnO and MoS2 nanoparticles as additives on performance of diesel oil-based nano lubricant

Cited by 188 publications

References 69 publications

Towards developing robust solid lubricant operable in multifarious environments

Towards developing robust solid lubricant operable in multifarious environments

Viscosity, tribological and physicochemical features of ZnO and MoS2 diesel oil-based nanofluids: An experimental study

Comparison between multi-walled carbon nanotubes and Titanium dioxide nanoparticles as additives on performance of Turbine meter oil nano lubricant

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