Novel tertiary dry solid lubricant on steel surfaces reduces significant friction and wear under high load conditions

Alazemi, Abdullah A.; Dysart, Arthur D.; Shaffer, Steven; Pol, Vilas G.; Stacke, Lars-Erik; Sadeghi, Farshid

doi:10.1016/j.carbon.2017.07.030

Cited by 29 publications

(8 citation statements)

References 37 publications

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“…[1][2][3][4][5] Improving the tribological property of material can not only ameliorate the situation of energy losses but also benefit for ascending the mechanism system reliability. [6][7][8] Recently, the application of fabric reinforced polymer composite in the area of solid self-lubricating composites is drawing increasing attention owing to their advantage of high bearing capability, maintenance free, flexible designability. [9] The fabric reinforced polymer composites are applied for steering part or load bearing component in the aircraft, hydraulic engineering, and heavy machinery in the form of self-lubricating spherical plain bearing or bushing.…”

Section: Introductionmentioning

confidence: 99%

MoS₂‐decorated talc hybrid for improving the tribological property of Nomex/PTFE fabric composites

Zhang

Yang

et al. 2021

Polymer Composites

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Producing self‐lubricating fabric composites with excellent wear resistance and long service life is desired for their use in practical application, yet still challenging. Therefore, a novel nanoparticle of talc‐molybdenum sulfide (MoS2) hybrid nanosheets was synthesized via one‐step hydrothermal reaction in this work and incorporated into the Nomex/polytetrafluoroethylene (PTFE) self‐lubricating fabric composites. The spectroscopic and microscopic characterization demonstrated that the talc‐MoS2 nanosheets were successfully synthesized. The talc‐MoS2 nanosheets exhibit the obvious layered structure and covered with MoS2. The effect of talc‐MoS2 hybrid nanosheets on the tribological performance of fabric composites was systematically evaluated by tri‐pin on disk tribometer. The results show that the talc‐MoS2 nanosheets increased the thermal stability, thermal conductivity, tensile strength, and hardness of composite and was favorable for forming high‐quality transfer film on the surface of counterpart pin during the wear process owing to the cooperation effect of talc‐MoS2. The wear rate of talc‐MoS2‐reinforced composite was reduced by 30%–53% under different conditions compared with pure fabric composite.

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Section: Introductionmentioning

confidence: 99%

MoS₂‐decorated talc hybrid for improving the tribological property of Nomex/PTFE fabric composites

Zhang

Yang

et al. 2021

Polymer Composites

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“…Lee et al [40] reported that the improvement in frictional response observed for oxidized graphene during micro-frictional atomic force microscopy studies is due to the characteristics of the sp 2 rich subdomains. Alazemi et al [41] demonstrated that graphene-ZnO composites have excellent friction and wear reduction properties for solid film lubrication owing to an increase in the adhesion of the coating. Recently, Saravanan et al [42] prepared multilayer polyethyleneimine/graphene coatings for macroscale superlubricity in different gas environments via layer-by-layer deposition techniques.…”

Section: Introductionmentioning

confidence: 99%

Lubrication of dry sliding metallic contacts by chemically prepared functionalized graphitic nanoparticles

2019

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Understanding the mechanism of precision sliding contacts with thin, adherent solid nano lubricating particle films is important to improve friction and wear behavior and ensure mechanical devices have long service lifetimes. Herein, a facile and multistep approach for the preparation of graphene oxide (GO) is presented. Subsequently, surface modification of as-synthesized GO with octadecyl amine (ODA) is performed to prepare hydrophobic GO-ODA and with 6-amino-4-hydroxy-2-naphthalenesulfonic acid (ANS) to prepare amphoteric GO-ANS through a nucleophilic addition reaction. X-ray diffraction and ultraviolet-visible, Fourier transform infrared, and Raman spectroscopy provide significant information about the reduction of oxygen functionalities on GO and the introduction of new functionalities in GO-ODA and GO-ANS. The effects of particle functionalization for the improved control of particle adhesion to the tribocontact have been studied. Wettability and thermal stability were determined using the water contact angle, and atomic force microscopy and differential scanning calorimetry (DSC) were used to characterize particle adhesion to the tribocontact. The tribological performances of the particles have been investigated using macro-and micro-tribometry using pin/ball-on-disc contact geometries. The influence of particle functionalization on the contact pressure and sliding velocity was also studied under rotating and reciprocating tribo-contact in ambient conditions. With an increase in the contact pressure, the functionalized particles are pushed down into the contact, and they adhere to the substrate to form a continuous film that eventually reduces friction. Amphoteric GO-ANS provides the lowest and most steady coefficient of friction (COF) under all tested conditions along with low wear depth and minimal plastic deformation. This is because particles with superior wetting and thermal properties can have better adherence to and stability on the surface. GO-ANS has a superior ability to adhere on the track to form a thicker and more continuous film at the interface, which is investigated by field emission scanning electron microscopy, energy dispersive spectroscopy, and Raman analysis.

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“…Similarly, Xu et al [14] observed a frictional improvement when adding multilayer graphene to reinforce TiAl matrix composites. Alazemi et al [15] synthesised a graphene-zinc oxide composite tribological coating and showed that it outperformed the coefficient of friction of a graphene only coating, with a 90% decrease in the wear rate compared to the unlubricated contact. Berman et al [7] reported a superlubritic condition at the macroscale involving a combination of graphene, nanodiamonds and a diamond-like carbon film (DLC), achieving a coefficient of friction of 0.004.…”

Section: Introductionmentioning

confidence: 99%

“…GO films have shown tribological improvements when used as additives to liquid lubricants [19,20], when used to reinforce a bulk material matrix [13,14] and as thin film solid lubricants [8] such as those examined in this research. It has also been demonstrated that more favourable tribological conditions may be achieved by combining GO with other components to create a composite thin film solid lubricant [15].…”

Section: Introductionmentioning

confidence: 99%

Multiscale Numerical and Experimental Analysis of Tribological Performance of GO Coating on Steel Substrates

et al. 2019

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Herein, nano-tribological behaviour of graphene oxide (GO) coatings is evaluated by a combination of nanoscale frictional performance and adhesion, as well as macroscale numerical modelling. A suite of characterisation techniques including atomic force microscopy (AFM) and optical interferometry are used to characterise the coatings at the asperity level. Numerical modelling is employed to consider the effectiveness of the coatings at the conjunction level. The macroscale numerical model reveals suitable deposition conditions for superior GO coatings, as confirmed by the lowest measured friction values. The proposed macroscale numerical model is developed considering both the surface shear strength of asperities of coatings obtained from AFM and the resultant morphology of the depositions obtained from surface measurements. Such a multi-scale approach, comprising numerical and experimental methods to investigate the tribological behaviour of GO tribological films has not been reported hitherto and can be applied to real-world macroscale applications such as the piston ring/cylinder liner conjunction within the modern internal combustion engine.

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Novel tertiary dry solid lubricant on steel surfaces reduces significant friction and wear under high load conditions

Cited by 29 publications

References 37 publications

MoS₂‐decorated talc hybrid for improving the tribological property of Nomex/PTFE fabric composites

MoS₂‐decorated talc hybrid for improving the tribological property of Nomex/PTFE fabric composites

Lubrication of dry sliding metallic contacts by chemically prepared functionalized graphitic nanoparticles

Multiscale Numerical and Experimental Analysis of Tribological Performance of GO Coating on Steel Substrates

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Novel tertiary dry solid lubricant on steel surfaces reduces significant friction and wear under high load conditions

Cited by 29 publications

References 37 publications

MoS2‐decorated talc hybrid for improving the tribological property of Nomex/PTFE fabric composites

MoS2‐decorated talc hybrid for improving the tribological property of Nomex/PTFE fabric composites

Lubrication of dry sliding metallic contacts by chemically prepared functionalized graphitic nanoparticles

Multiscale Numerical and Experimental Analysis of Tribological Performance of GO Coating on Steel Substrates

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Product

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MoS₂‐decorated talc hybrid for improving the tribological property of Nomex/PTFE fabric composites

MoS₂‐decorated talc hybrid for improving the tribological property of Nomex/PTFE fabric composites