Friction and Tribochemical Wear Behaviors of Native Oxide Layer on Silicon at Nanoscale

Chen, Lei; Xiao, Chen; He, Xin; Yu, Bingjun; Kim, Seong H.; Qian, Linmao

doi:10.1007/s11249-017-0922-9

Cited by 32 publications

(32 citation statements)

References 46 publications

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“…Different mechanisms can be used to explain running-in behaviors of the nanoasperity friction on hydrophilic and hydrophobic surfaces. For example, on OH-terminated Si surfaces, the Ft decreases remarkably when the outermost hydrophilic termination groups are removed [126][127][128]. Water adsorption can also significantly alter the friction behaviors on 2D material surfaces.…”

Section: Colloids Interfaces 2019 3 X For Peer Reviewmentioning

confidence: 99%

“…Graphene surfaces are well known to provide extreme low friction due to their low surface energy [129][130][131]. However, F t increases substantially when the graphene surface is oxidized ( Figure 19) [126]. This result indicates that the growth of OH groups on graphene oxide (GO) surfaces may enhance water adsorption and facilitate the growth of water bridges between the AFM tip and GO surface, thereby augmenting the effect of F c and increasing F t .…”

Section: Colloids Interfaces 2019 3 X For Peer Reviewmentioning

confidence: 99%

“…Once water condensation occurs, it exerts a strong impact on friction, especially at nanoasperity contact, depending on the temperature, sliding speed, RH, and surface wettability ( Figures 16, 18 and 19) [102,121,126]. In the multi-roughness peak model developed by Bocquet et al [117], the F a caused by capillary action between contact surfaces is related to the number of capillary menisci formed.…”

Section: Effect Of Water Condensation On Friction Forcementioning

confidence: 99%

Section: Effect Of Water Condensation On Friction Forcementioning

confidence: 99%

“…The radii of tip and Kelvin radii are R and r m , respectively. The cross section of a single water meniscus is A. Reprinted from Ref [126],. Copyright 2018, with permission from IOP publications.Colloids Interfaces 2019, 3, x FOR PEER REVIEW 20 of 30RH-dependent capillary-dominated friction on hydrophobic and hydrophilic surfaces.…”

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confidence: 99%

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Thickness and Structure of Adsorbed Water Layer and Effects on Adhesion and Friction at Nanoasperity Contact

Xiao

Shi

et al. 2019

Colloids and Interfaces

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Most inorganic material surfaces exposed to ambient air can adsorb water, and hydrogen bonding interactions among adsorbed water molecules vary depending on, not only intrinsic properties of material surfaces, but also extrinsic working conditions. When dimensions of solid objects shrink to micro- and nano-scales, the ratio of surface area to volume increases greatly and the contribution of water condensation on interfacial forces, such as adhesion (Fa) and friction (Ft), becomes significant. This paper reviews the structural evolution of the adsorbed water layer on solid surfaces and its effect on Fa and Ft at nanoasperity contact for sphere-on-flat geometry. The details of the underlying mechanisms governing water adsorption behaviors vary depending on the atomic structure of the substrate, surface hydrophilicity and atmospheric conditions. The solid surfaces reviewed in this paper include metal/metallic oxides, silicon/silicon oxides, fluorides, and two-dimensional materials. The mechanism by which water condensation influences Fa is discussed based on the competition among capillary force, van der Waals force and the rupture force of solid-like water bridge. The condensed meniscus and the molecular configuration of the water bridge are influenced by surface roughness, surface hydrophilicity, temperature, sliding velocity, which in turn affect the kinetics of water condensation and interfacial Ft. Taking the effects of the thickness and structure of adsorbed water into account is important to obtain a full understanding of the interfacial forces at nanoasperity contact under ambient conditions.

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Section: Colloids Interfaces 2019 3 X For Peer Reviewmentioning

confidence: 99%

Section: Colloids Interfaces 2019 3 X For Peer Reviewmentioning

confidence: 99%

Section: Effect Of Water Condensation On Friction Forcementioning

confidence: 99%

Section: Effect Of Water Condensation On Friction Forcementioning

confidence: 99%

mentioning

confidence: 99%

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Thickness and Structure of Adsorbed Water Layer and Effects on Adhesion and Friction at Nanoasperity Contact

Xiao

Shi

et al. 2019

Colloids and Interfaces

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Activation Volume in Shear-Driven Chemical Reactions

Martini

Kim

2021

Tribol Lett

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Interfacial shear-driven or shear-assisted chemical reactions play an important role in many engineering processes, including reactions between lubricant additives and the surfaces of mechanical components and fabrication of surface topographic features. Mechanistic studies of shear-driven chemical reactions often employ a mechanically assisted thermal-activation model from which a so-called activation volume can be defined. Activation volume is important because it quantifies the efficiency of interfacial shear to drive the reaction. Recent advancements in methods have enabled calculation of activation volume from both nano-and macro-scale experiments as well as simulations. However, the calculated volumes differ by orders of magnitude, even for the same reactant species, and the physical interpretations vary correspondingly. Here, we review how activation volume has been measured and interpreted for shear-driven reactions in the literature with the goal of guiding future efforts to understand and use this important parameter for engineering design through tribochemistry.

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Role of interfacial water in adhesion, friction, and wear—A critical review

Chen

Qian

2020

Friction

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Surficial water adsorption and interfacial water condensation as natural phenomena that can alter the contact status of the solid interface and tribological performances are crucial in all length scales, i.e., from earthquakes to skating at the macroscale level and even to micro/nano-electromechanical systems (M/NEMS) at the microscale/nanoscale level. Interfacial water exhibits diverse structure and properties from bulk water because of its further interaction with solid surfaces. In this paper, the evolutions of the molecular configuration of the adsorbed water layer depending on solid surface chemistry (wettability) and structure, environmental conditions (i.e., relative humidity and temperature), and experimental parameters (i.e., sliding speed and normal load) and their impacts on tribological performances, such as adhesion, friction, and wear, are systematically reviewed. Based on these factors, interfacial water can increase or reduce adhesion and friction as well as facilitate or suppress the tribochemical wear depending on the water condensation kinetics at the interface as well as the thickness and structure of the involved interfacial water.

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Friction and Tribochemical Wear Behaviors of Native Oxide Layer on Silicon at Nanoscale

Cited by 32 publications

References 46 publications

Thickness and Structure of Adsorbed Water Layer and Effects on Adhesion and Friction at Nanoasperity Contact

Thickness and Structure of Adsorbed Water Layer and Effects on Adhesion and Friction at Nanoasperity Contact

Activation Volume in Shear-Driven Chemical Reactions

Role of interfacial water in adhesion, friction, and wear—A critical review

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