Iron‐Nanoparticle Driven Tribochemistry Leading to Superlubric Sliding Interfaces

Berman, Diana; Mutyala, Kalyan C.; Srinivasan, Srilok; Sankaranarayanan, Subramanian K. R. S.; Erdemir, Ali; Shevchenko, Elena V.; Sumant, Anirudha V.

doi:10.1002/admi.201901416

Cited by 52 publications

(32 citation statements)

References 40 publications

(50 reference statements)

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“…In this section, the motion of nanoparticles between friction surfaces will be studied and analyzed to further reveal the lubrication mechanisms of single performs ''non-sliding'' rolling that the sliding velocity of slab is equal to the linear velocity of the nanoparticle [37,47], meanwhile the relative displacement should be zero in this condition. Herein, we proposed a novel parameter, the rolling/sliding motion coefficient (K rs ) between 0 and 1, to evaluate the motion pattern of Al 2 O 3 NPs, as shown in Eq.…”

Section: Motion Of Nanoparticles During Frictionmentioning

confidence: 99%

Synergistic lubrication effect of Al2O3 and MoS2 nanoparticles confined between iron surfaces: a molecular dynamics study

Sun

Meng

et al. 2021

J Mater Sci

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Nonequilibrium molecular dynamics (NEMD) simulations were performed to investigate the tribology behaviors of Al 2 O 3 and MoS 2 nanoparticles confined between iron (Fe) slabs. Results indicated that the combined use of these two nanoparticles yielded the lowest and most stable friction force, normal force, interface temperature and wear rate, which exhibited a significant synergistic lubrication effect. A novel parameter the rolling/sliding motion coefficient (K rs ) was proposed to evaluate the motion pattern of spherical Al 2 O 3 . There were 51% rolling ? 49% sliding motion when used alone and 91% rolling ? 9% sliding in the existence of MoS 2 . Similarly, about 72.3% of the friction was shared by interlayer sliding of MoS 2 monolayers in the presence of Al 2 O 3 , which was higher than used alone (54.8%). Then, the diffusion of atoms at the friction interface was explored to reveal the synergistic lubrication mechanism. The tribofilm formed by the diffusion of Fe and S atoms could protect the metal surfaces from further wear. The adsorption of S atoms to Al 2 O 3 nanoparticle could promote its rolling effect and prevent it from embedding into iron matrix. Besides, Al 2 O 3 could also facilitate the separation of MoS 2 monolayers to enhance their interlayer sliding effect.

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Section: Motion Of Nanoparticles During Frictionmentioning

confidence: 99%

Synergistic lubrication effect of Al2O3 and MoS2 nanoparticles confined between iron surfaces: a molecular dynamics study

Sun

Meng

et al. 2021

J Mater Sci

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“…In the field of tribology and tribochemistry, nanomaterials are largely studied based on their ability to enhance lubricity at a sliding interface. Such examples in literature include nano-sized carbon additives [123], as well as inorganic additives [124,125], and, as seen in the previous section regarding tribofilms, the in situ tribochemical formation of nanomaterials onto a surface is a common theme in this area of study, such as with the creation of nano-sized carbon [126]. With the obvious capability for the tribochemical synthesis of nanomaterials, its usage outside of conventional tribological applications remains scarce.…”

Section: Nano Structure Fabricationmentioning

confidence: 99%

Tribochemistry as an Alternative Synthesis Pathway

2020

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While reactions driven by mechanical force or stress can be labeled mechanochemical, those specifically occurring at a sliding interface inherit the name tribochemical, which stems from the study of friction and wear: tribology. Increased perception of tribochemical reactions has been gained through technological advancement, and the development of new applications remains on-going. This surprising physico-kinetic process offers great potential in novel reaction pathways for synthesis techniques and nanoparticle interactions, and it could prove to be a powerful cross-disciplinary research area among chemists, engineers, and physicists. In this review article, a survey of the history and recent usage of tribochemical reaction pathways is presented, with a focus on forging new compounds and materials with this sustainable synthesis methodology. In addition, an overview of tribochemistry’s current utility as a synthesis pathway is given and compared to that of traditional mechanochemistry.

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“…Berman et al [84] illustrated that solid lubricants consist of graphene mixed with iron nanoparticles under high contact pressures at the sliding interface can undergo tribochemical reactions resulting in the formation of onion-like-carbon nanostructures (OLCs) giving rise to superlubricity (~0.0009 COF) in dry N2 environment ( Figure 9). The formation of the OLCs is ascribed to the common tribochemical reaction, which was initiated by Fe nanoparticles with neighboring graphene and carbon debris formed in the sliding process.…”

Section: In Combination With Non-2d Materialsmentioning

confidence: 99%

“…(c) TEM image of wear debris collected from the wear track after 500 wear cycles revealing a well-formed onion-like carbon nanostructure. Reproduced from ref [84]. with permission.…”

mentioning

confidence: 99%

Tribology of 2D Nanomaterials: A Review

Uzoma¹,

Hu²,

Khadem³

et al. 2020

Preprint

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The exfoliation of graphene has opened a new frontier in material science with a focus on 2D materials. The unique thermal, physical and chemical properties of these materials have made them one of the choicest candidates in novel mechanical and nano-electronic devices. Notably, 2D materials such as graphene, MoS2, WS2, h-BN, and Black Phosphorus have shown outstanding lowest frictional coefficients and wear rates, making them attractive materials for high-performance nano-lubricants and lubricating applications. The objective of this work is to provide a comprehensive overview of the most recent developments in the tribological potentials of 2D materials. At first, the essential physical, wear, and frictional characteristics of the 2D materials including their production techniques are discussed. Subsequently, the experimental explorations and theoretical simulations of the most common 2D materials are reviewed in regards to their tribological applications such as their use as solid lubricants and surface lubricant nano-additives. The effects of micro/nano textures on friction behavior are also reviewed. Finally, the current challenges in tribological applications of 2D materials and their prospects are discussed.

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Iron‐Nanoparticle Driven Tribochemistry Leading to Superlubric Sliding Interfaces

Cited by 52 publications

References 40 publications

Synergistic lubrication effect of Al2O3 and MoS2 nanoparticles confined between iron surfaces: a molecular dynamics study

Synergistic lubrication effect of Al2O3 and MoS2 nanoparticles confined between iron surfaces: a molecular dynamics study

Tribochemistry as an Alternative Synthesis Pathway

Tribology of 2D Nanomaterials: A Review

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