An investigation on the tribological behaviors of steel/copper and steel/steel friction pairs via lubrication with a graphene additive

Mao, Junyuan; Chen, Guangyan; Zhao, Jun; He, Yongyong; Luo, Jianbin

doi:10.1007/s40544-019-0327-x

Cited by 48 publications

(18 citation statements)

References 39 publications

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“…The results are illustrated in Figure 5. The depth and width of the wear mark are significantly reduced with MoS 2 powder although both sides of the wear mark have the same plastic deformation as the unlubricated friction pairs (Mao et al, 2020). The addition of MoS 2 powder can also effectively improve the roughness of wear scar.…”

Section: Powder Lubrication Layer and Wear Mark Morphology At The Sliding Interfacementioning

confidence: 99%

Tribological properties of MoS2 powder-lubricated interface

Tong

Zhang³

2021

ILT

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Purpose This study aims to investigate the effect of MoS2 powder on tribological properties of sliding interfaces. Design/methodology/approach Loose MoS2 powder was introduced in the gap of point-contact friction pairs, and sliding friction test was conducted using a testing machine. Friction noise, wear mark appearance, microstructure and wear debris were characterized with a noise tester, white-light interferometer, scanning electron microscope and ferrograph, respectively. Numerical simulation was also performed to analyze the influence of MoS2 powder on tribological properties of the sliding interface. Findings MoS2 powder remarkably improved the lubrication performance of the sliding interface, whose friction coefficient and wear rate were reduced by one-fifth of the interface values without powder. The addition of MoS2 powder also reduced stress, plastic deformation and friction temperature in the wear mark. The sliding interface with MoS2 powder demonstrated lower friction noise and roughness compared with the interface without powder lubrication. The adherence of MoS2 powder onto the friction interface formed a friction film, which induced the wear mechanism of the sliding interface to change from serious cutting and adhesive wear to delamination and slight cutting wear under the action of normal and shear forces. Originality/value Tribological characteristics of the interface with MoS2 powder lubrication were clarified. This work provides a theoretical basis for solid-powder lubrication and reference for its application in engineering. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-04-2020-0150/

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Section: Powder Lubrication Layer and Wear Mark Morphology At The Sliding Interfacementioning

confidence: 99%

Tribological properties of MoS2 powder-lubricated interface

Tong

Zhang³

2021

ILT

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“…Graphene and GO have similar frictionreduction mechanisms; that is, they both form a protective film to separate the two contact surfaces [71]. Mao et al [72] performed a comparative study to investigate the tribological performance of graphene when applied as a lubricant additive for steel/steel and steel/copper friction pairs. According to their results, graphene achieved superior lubrication in steel/steel friction pairs than steel/copper ones.…”

Section: Two-dimensional Carbon Nanomaterials: Graphene and Gomentioning

confidence: 99%

Inorganic nanomaterial lubricant additives for base fluids, to improve tribological performance: Recent developments

et al. 2021

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In this paper, we review recent research developments regarding the tribological performances of a series of inorganic nano-additives in lubricating fluids. First, we examine several basic types of inorganic nanomaterials, including metallic nanoparticles, metal oxides, carbon nanomaterials, and “other” nanomaterials. More specifically, the metallic nanoparticles we examine include silver, copper, nickel, molybdenum, and tungsten nanoparticles; the metal oxides include CuO, ZnO, Fe3O4, TiO2, ZrO2, Al2O3, and several double-metal oxides; the carbon nanomaterials include fullerene, carbon quantum dots, carbon nanotubes, graphene, graphene oxides, graphite, and diamond; and the “other” nanomaterials include metal sulfides, rare-earth compounds, layered double hydroxides, clay minerals, hexagonal boron nitride, black phosphorus, and nanocomposites. Second, we summarize the lubrication mechanisms of these nano-additives and identify the factors affecting their tribological performance. Finally, we briefly discuss the challenges faced by inorganic nanoparticles in lubrication applications and discuss future research directions. This review offers new perspectives to improve our understanding of inorganic nano-additives in tribology, as well as several new approaches to expand their practical applications.

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“…The nanostructures could contribute to the tribophysical and tribochemical actions for the formation of resulting transfer lms [12][13]. However, some hard particles seemed to restrict the stacking of the transfer lm [14]. In particular, the transfer lm containing metal particles sometimes increases the surface roughness as a result of the decreased tribological properties [15].…”

Section: Introductionmentioning

confidence: 99%

A Formation Mechanism and Tribological Properties of PTFE Transfer Film

Wang

Dong

et al. 2021

Preprint

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Polytetrafluoroethylene (PTFE), as one of the most widely used solid lubricating materials, is thought to be very efficient at forming transfer film because of terrific low intermolecular force. This work investigates the tribological properties of PTFE transfer film under dry friction, and further explores its formation process and evolution mechanism. The friction coefficient is the lowest when the transfer film thickness is in range of 8-12 μm. An evaluation method for transfer film is proposed. The results show that the quality of the transfer film is closely related to the test load and velocity. This method is expected to be a general evaluation method for polymer transfer film, which can further directly evaluate the wear state of polymers, and even directly predict the tribological properties of polymers and abrasion life.

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An investigation on the tribological behaviors of steel/copper and steel/steel friction pairs via lubrication with a graphene additive

Cited by 48 publications

References 39 publications

Tribological properties of MoS2 powder-lubricated interface

Tribological properties of MoS2 powder-lubricated interface

Inorganic nanomaterial lubricant additives for base fluids, to improve tribological performance: Recent developments

A Formation Mechanism and Tribological Properties of PTFE Transfer Film

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