Tribological behaviour of graphene oxide sheets as lubricating additives in bio-oil

Wu, Daoyi; Xu, Yufu; Yao, Lulu; You, Tao; Hu, Xianguo

doi:10.1108/ilt-11-2017-0356

Cited by 13 publications

(11 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nevertheless, few studies have considered the effect of automatic transmission fluid (ATF) temperature on the running-in. Fundamental studies into the ATF temperature effect mainly focused on its influence in the steady-state phrase, like on the tribological behaviour (Wu et al, 2018a(Wu et al, , 2018bXu et al, 2019;Luo et al, 2021), drag torque (Wu et al, 2018a(Wu et al, , 2018bIqbal et al, 2013) and the temperature field of friction components (Lin et al, 2018;Kumar et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

“…As the ATF is usually applied to lubricate the friction surfaces and take away the friction heat, the ATF temperature is critical to the friction and wear performance of clutch components (Wu et al, 2018a(Wu et al, , 2018bKugimiya et al, 1998). During a clutch engaging process, the ATF film at the friction components is squeezed, so sliding contact of the opposing surfaces occurs (Wang et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of ATF temperature on the friction-wear characteristic of a wet multi-disc clutch during the running-in process

Wang

Zheng

et al. 2022

ILT

View full text Add to dashboard Cite

Purpose This paper aims to explore the effect of automatic transmission fluid (ATF) temperature on the dynamic friction-wear properties of the friction component in a wet multi-disc clutch during the running-in process. Design/methodology/approach The running-in evolution was explored in terms of global friction performance and instantaneous friction characteristics. The variation of friction torque of the initial 300 engagement cycles was obtained by wet-clutch tests. Finally, an optical microscope was used to detect the wear mechanism of friction surfaces. Findings The ATF temperature showed a significant effect on the friction-wear performance in the clutch running-in process. The mean coefficient of friction decreased with the increase of the ATF temperature and decreased rapidly in the approximately initial 60 clutch engagements. The higher the ATF temperature was, the thinner the ATF film was, and more asperity summits were cut, thus leading to a smoother surface. Considering the slightly instantaneous friction fluctuation and the wear performance, a proper ATF temperature is necessary. Originality/value The results provide theoretical guidance for selecting the optimal ATF temperature during the running-in process.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of ATF temperature on the friction-wear characteristic of a wet multi-disc clutch during the running-in process

Wang

Zheng

et al. 2022

ILT

View full text Add to dashboard Cite

show abstract

“…The surfaces became smoothest at the concentration of 0.01%. Higher levels of additive aggravated the surface roughness owing to the aggregation of the nanocomposites [26]. The worn surfaces displayed no aggregated regions, suggesting removal of the nanocomposites from the interface as a result of the 'ball-bearing' characteristics of nano-TiO 2 [27].…”

Section: Analysis Of the Worn Surfacesmentioning

confidence: 99%

Surface characterization of steel/steel contact lubricated by PAO6 with novel black phosphorus nanocomposites

Luo

et al. 2020

Friction

Self Cite

View full text Add to dashboard Cite

In the present work, two types of novel nano additives, titanium sulfonate ligand/black phosphorus (TiL 4 /BP) and titanium dioxide/black phosphorus (TiO 2 /BP) nanocomposites, were prepared. The tribological behavior of the steel/steel friction pairs lubricated by polyalphaolefins type 6 (PAO6) containing the nanocomposites under boundary lubrication was studied. The worn surfaces were analyzed using modern surface techniques. The experimental results show that the rubbed surfaces became smooth and showed little wear with the addition of the nanocomposites. TiO 2 /BP nanocomposites can significantly improve the lubricity of BP nanosheets under high contact stress. The synergistic roles of the load-bearing abilities and rolling effect of TiO 2 nanoparticles, the slip induced by the BP with its layered structure, and the establishment of a tribofilm on the sliding interface are the basis of the tribological mechanisms.

show abstract

“…As a result, the friction coefficient decreases. Further increase in the nanoparticles result in an increase in the friction coefficient because of nano-particles agglomeration (Wu et al 2018;. Figure 8 shows the weight reduction as a function of load and weight percentage.…”

Section: Friction Coefficientmentioning

confidence: 99%

Experimental and Numerical Investigation of Friction Coefficient and Wear Volume in the Mixed-Film Lubrication Regime with ZnO Nano-Particle

Gholami

Kashani

Silani

et al. 2020

JAFM

View full text Add to dashboard Cite

One of the most important challenges industry has always been facing is the wear phenomenon. Wear is the cause of huge deteriorations in parts and results in a drop in performance and lifetime of different machines. Therefore, finding solutions to reduce friction coefficient and wear is of special importance. The present research aims at numerical and experimental investigation of friction coefficient and wear in the presence of nano-lubricants. In the numerical section, to tackle different scales of contact components, two sub-models are developed. In the first one, contact of asperities is modeled and the properties of contact surfaces are taken into account. Second sub-model simulates nano-particles in the contact region. Furthermore, a series of experiments are conducted under different loads, speeds, and different values for Zinc Oxide nano-particle weight percent using a pin-on-disk test rig. Results show that predicted friction coefficient and wear volume in theory are reasonably in agreement with experimental results. It was found that adding nanoparticle to the lubricant can be beneficial in terms of friction reduction.

show abstract

Tribological behaviour of graphene oxide sheets as lubricating additives in bio-oil

Cited by 13 publications

References 30 publications

Effect of ATF temperature on the friction-wear characteristic of a wet multi-disc clutch during the running-in process

Effect of ATF temperature on the friction-wear characteristic of a wet multi-disc clutch during the running-in process

Surface characterization of steel/steel contact lubricated by PAO6 with novel black phosphorus nanocomposites

Experimental and Numerical Investigation of Friction Coefficient and Wear Volume in the Mixed-Film Lubrication Regime with ZnO Nano-Particle

Contact Info

Product

Resources

About