Recent development in friction of 2D materials: from mechanisms to applications

Guo, Yanbao; Zhou, Xuanli; Lee, Kyungjun; Yoon, Heesung; Xu, Quan; Wang, Deguo

doi:10.1088/1361-6528/abfa52

Cited by 55 publications

(37 citation statements)

References 116 publications

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“…The relative movement of the contact surfaces provides shear stress for the as-prepared Ti 3 C 2 T x . In addition, the easy relative slip between the layers of the interlayer in the multilayer 2D DDP-Ti 3 C 2 T x nanosheets forms a sliding system with frictional contact. , The friction in the sliding system is much lower, resulting in effective lubrication. Furthermore, Ti 3 C 2 T x nanosheets can be easily destroyed under the condition of higher loads, forming smaller nanofragments, and the damaged Ti 3 C 2 T x fragments fill into the depression of the friction pair, which makes the friction pair surface smoother, reduces the roughness of the contact surface, and decreases wear volume .…”

Section: Resultsmentioning

confidence: 99%

Dialkyl Dithiophosphate-Functionalized Ti₃C₂T_x MXene Nanosheets as Effective Lubricant Additives for Antiwear and Friction Reduction

Gao

Zhang

et al. 2021

ACS Appl. Nano Mater.

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Surface modification can be used as an effective tool for designing functionalized 2D nanomaterial-based lubricant additives with desirable properties. In this paper, Ti 3 C 2 T x -based nanoadditives are prepared via surface modification with a tannic acid (TA)−Fe 3+ complex and then by introducing commercial lubricating additive dialkyl dithiophosphate (DDP) via Michael addition. TA and FeCl 3 solutions are used to form a TA−metal complex as the adhesion layer to anchor Ti 3 C 2 T x nanosheets and then modification with a commercial lubricating additive DDP molecule via Michael addition, resulting in the formation of DDPfunctionalized MXene nanosheets (DDP-Ti 3 C 2 T x ). The experimental results show that the dispersive stability of the as-prepared DDP-Ti 3 C 2 T x in 500SN base oil is greatly improved for more than 1 week. Furthermore, the tribological properties of the DDP-Ti 3 C 2 T x nanosheet additive are evaluated. The results show that the asprepared DDP-Ti 3 C 2 T x exhibits significant anti-wear and friction reduction abilities with a low coefficient of friction not exceeding 0.11, reduction in the corresponding wear volume by about 87%, and a high load-carrying capacity up to 500 N as a lubricating additive. The tribological properties may be attributable to the good dispersion and the shape of the small sheet, which ensure their entry into the contact area of the friction pair and the formation of a continuous chemical protective film that prevents direct contact and seizure.

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Section: Resultsmentioning

confidence: 99%

Dialkyl Dithiophosphate-Functionalized Ti₃C₂T_x MXene Nanosheets as Effective Lubricant Additives for Antiwear and Friction Reduction

Gao

Zhang

et al. 2021

ACS Appl. Nano Mater.

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“…Therefore, it is urgent to strengthen the protective film to resist high contact pressure in fabricating superlubricity surface. Introducing a small amount of 2D nanoadditives into the liquid lubricants is proven effective in enhancing the strength of the protective film [94][95][96]. During the friction process, the 2D materials www.Springer.com/journal/40544 | Friction absorb on the solid surface of friction pair to form a smooth and robust protective layer.…”

Section: Superlubricitymentioning

confidence: 99%

Low friction of superslippery and superlubricity: A review

et al. 2022

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The issues regarding energy dissipation and component damage caused by the interface friction between a friction pair attract enormous attention to friction reduction. The key-enabling technique to realize friction reduction is the use of lubricants. The lubricants smooth the contact interfaces, achieving an ultralow friction contact, which is called superslippery or superlubricity. At present, superslippery and superlubricity are two isolated research topics. There is a lack of unified definition on superslippery and superlubricity from the viewpoint of tribology. Herein, this review aims at exploring the differences and relations between superslippery and superlubricity from their origin and application scenarios. Meanwhile, the challenges for developing superslippery surface and superlubricity surface are discussed. In addition, perspectives on the interactive development of these two surfaces are presented. We hope that our discussion can provide guidance for designing superslippery or superlubricity surfaces by using varies drag-reduction technologies.

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“…An effective approach for minimizing the friction force in mechanical components and, hence, mitigating energy consumption, is using layered-structure materials as additives in oil-based lubricants (Liu L. et al, 2018;Guo et al, 2021). Force spectroscopy has been used to investigate the molecular layering of different base oils used…”

Section: Non-polar Liquidsmentioning

confidence: 99%

Nanoscale friction characteristics of layered-structure materials in dry and wet environments

2022

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Bulk layered materials, such as graphite and molybdenum disulfide, have long been used as solid lubricants in various industrial applications. The weak interlayer van der Waals interactions in these materials generate a low shear slip-plane, which reduces the interfacial friction. The cumulative trends toward device miniaturization have increased the need for basic knowledge of the nanoscale friction of contact-mode devices containing layered materials. Further, the decomposition and degradation of bulk layered solids subjected to shear forces are detrimental to their lubricating characteristics. Layered-structure materials, such as graphene, hexagonal boron nitride, and MXenes consisting of single or few atomic layers, behave as a new class of lubricious substances when deposited at a sliding interface. The exceptional mechanical strength, thermal conductivity, electronic properties, large theoretical specific area, and chemical inertness of these materials make them ideal antifriction materials for continuous sliding interfaces, especially when operated at elevated temperatures. These properties hold great promise for widespread applications both in dry environments, such as solid film lubrication for micro/nano-electromechanical systems, nanocomposite materials, space lubrication, and optical devices, as well as in wet environments, such as desalination membranes, lubricant additives, and nanofluidic transporters. However, accurate and reliable prediction of the frictional behavior of layered-structure materials is challenging due to the complex physicochemical transformations encountered under tribostress. The presence of a liquid in the vicinity of a surface in wet-environment applications further complicates the lubrication behavior of layered-structure materials. Furthermore, insight into the origins of interfacial friction and adhesion due to localized contact interactions can be accomplished by atomic-level experimental techniques and computational methods, such as atomic force microscope (AFM) in combination with molecular dynamics (MD) and density functional theory (DFT). The AFM setup mimics asperity-asperity contact at the atomic level and can measure the friction force of layered-structure materials, whereas MD and DFT can provide insight into the chemomechanical transformations commencing at hidden interfaces, which cannot be detected by experimental methods. The objective of this review article is threefold. First, the relationship between friction and potential energy surface is examined for different layered-structure material systems, and the parameters that mainly affect the energy corrugation are interpreted in the context of reported results. Second, the atomic-scale friction mechanisms of layered-structure materials in dry or vacuum environments are discussed in light of experimental and theoretical findings, focusing on the most crucial frictional energy dissipation mechanisms. Third, the complex mechanisms affecting the nanosccale friction of layered-structure materials incorporated in liquid media are introduced for ionic, polar, and non-polar solutions.

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Recent development in friction of 2D materials: from mechanisms to applications

Cited by 55 publications

References 116 publications

Dialkyl Dithiophosphate-Functionalized Ti₃C₂T_x MXene Nanosheets as Effective Lubricant Additives for Antiwear and Friction Reduction

Dialkyl Dithiophosphate-Functionalized Ti₃C₂T_x MXene Nanosheets as Effective Lubricant Additives for Antiwear and Friction Reduction

Low friction of superslippery and superlubricity: A review

Nanoscale friction characteristics of layered-structure materials in dry and wet environments

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Recent development in friction of 2D materials: from mechanisms to applications

Cited by 55 publications

References 116 publications

Dialkyl Dithiophosphate-Functionalized Ti3C2Tx MXene Nanosheets as Effective Lubricant Additives for Antiwear and Friction Reduction

Dialkyl Dithiophosphate-Functionalized Ti3C2Tx MXene Nanosheets as Effective Lubricant Additives for Antiwear and Friction Reduction

Low friction of superslippery and superlubricity: A review

Nanoscale friction characteristics of layered-structure materials in dry and wet environments

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Product

Resources

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Dialkyl Dithiophosphate-Functionalized Ti₃C₂T_x MXene Nanosheets as Effective Lubricant Additives for Antiwear and Friction Reduction

Dialkyl Dithiophosphate-Functionalized Ti₃C₂T_x MXene Nanosheets as Effective Lubricant Additives for Antiwear and Friction Reduction