Mechanisms of ultra-low friction by hollow inorganic fullerene-like MoS2 nanoparticles

Cizaire, L.; Vacher, Béatrice; Mogne, Thierry Le; Martin, Jean Michel; Rapoport, L.; Margolin, A.; Tenne, Reshef

doi:10.1016/s0257-8972(02)00420-6

Cited by 272 publications

(186 citation statements)

References 13 publications

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“…Dietzel et al studied the transition from static to kinetic friction for metallic nanoparticles and found that the hysteretic character in the force domain is characterized by a constant kinetic-to-static-friction ratio of 0.5 [20]. Furthermore, the friction and wear properties of surface-modified TiO 2 nanoparticles [21], alumina nanoparticles filled with polytetrafluoroethylene (PTFE) [22], hollow inorganic fullerene-like MoS 2 nanoparticles [23], and thin films of fullerene-like MoS 2 nanoparticles [24] were also investigated for potential applications in nanofabrication and lubrication.…”

Section: Friction In Zero-dimensional Nanomaterialsmentioning

confidence: 99%

Friction of low-dimensional nanomaterial systems

et al. 2014

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When material dimensions are reduced to the nanoscale, exceptional physical mechanics properties can be obtained that differ significantly from the corresponding bulk materials. Here we review the physical mechanics of the friction of low-dimensional nanomaterials, including zero-dimensional nanoparticles, onedimensional multiwalled nanotubes and nanowires, and two-dimensional nanomaterials-such as graphene, hexagonal boron nitride (h-BN), and transition-metal dichalcogenides-as well as topological insulators. Nanoparticles between solid surfaces can serve as rolling and sliding lubrication, while the interlayer friction of multiwalled nanotubes can be ultralow or significantly high and sensitive to interwall spacing and chirality matching, as well as the tube materials. The interwall friction can be several orders of magnitude higher in binary polarized h-BN tubes than in carbon nanotubes mainly because of wall buckling. Furthermore, current extensive studies on two-dimensional nanomaterials are comprehensively reviewed herein. In contrast to their bulk materials that serve as traditional dry lubricants (e.g., graphite, bulk h-BN, and MoS 2 ), large-area highquality monolayered two-dimensional nanomaterials can serve as single-atom-thick coatings that minimize friction and wear. In addition, by appropriately tuning the surface properties, these materials have shown great promise for creating energy-efficient self-powered electro-opto-magneto-mechanical nanosystems. State-of-theart experimental and theoretical methods to characterize friction in nanomaterials are also introduced.

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Section: Friction In Zero-dimensional Nanomaterialsmentioning

confidence: 99%

Friction of low-dimensional nanomaterial systems

et al. 2014

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“…Evidently, O appeared on the worn surface lubricated by the base oil with the additive, whereas only C and Fe were observed on the metallic matrix. In comparison with the non-contact, the lubricated regime may form a tribo-film on the worn surface, which contained Fe, O, C, and Mn [25]. Additinally, the detailed element contents are present in Table 3.…”

Section: Optical Microscopy and Sem Analysis Of The Worn Surfacementioning

confidence: 99%

Nano Diesel Soot Particles Reduce Wear and Friction Performance Using an Oil Additive on a Laser Textured Surface

2018

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Tribological properties of nano diesel soot (DS) as an additive were investigated. Textures in linear radiating arrays were prepared on the surface of a spring-steel plate by laser radiation. The texture densities were 19.6%, 22.1%, and 44.2%, and the depth was 30 µm. The results indicated that the textured surface was interacted with additive favorably to improve its tribological performance. Friction coefficients and wear rates of textured surfaces with additive in oil were generally much lower compared to the original surface without additive. The higher area density of the textured surface with the additive in oil had the lowest friction coefficient, as low as 0.12, and also the minimum wear rate, as low as 1 × 10 3 µm/N·m in 100 • C, to be achievable. Such results can be attributed to the formation of the tribo-film and the storage function of the micro-dimple.

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“…Stribeck curves were calculated as a friction coefficient dependence on the Sommerfeld number (S). For this purpose, the applied normal load was step by step increased by 50 N (every 900 revolutions) starting from 220 N and ending with 970 N. Sommerfeld number was calculated [4] on the basis of from the following formula: where: p = P/L, L -a sleeve width, η is powder lubricant viscosity (0.69cP [3]), and u is the entraining velocity of the bearing surface, ε -clearance.…”

Section: Friction Testsmentioning

confidence: 99%

“…An improvement of sliding bearing performance with solid lubricant powders using Heshmat [2] quasi-hydrodynamic approach and Khonsary et al [5][6][7] theory of granular lubrication is still lacking in literature, in particular, for the high temperature conditions. the determination of influence of surface modification of high temperature sliding bearings with solid lubricant nanoparticles on the friction and wear properties of the is shown to be very important, and it is the main goal of this paper, which is continuation of analysis shown in [3].…”

Section: Introductionmentioning

confidence: 97%

“…The nanopowder lubricants [3] have recently demonstrated excellent lubrication capabilities during sliding at extreme temperatures in the case of use of porous nitrided stainless steel sliding bearings [4]. As shown by Heshmat [2], there are huge technological gains that can be achieved due to characterization of the powder lubricant behavior in high temperature sliding bearings and other friction units.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Surface Modification Of The High Temperature Porous Sliding Bearings With Solid Lubricant Nanoparticles

Wiśniewska-Weinert¹

2015

Archives of Metallurgy and Materials

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A surface modification of stainless steel bearing sleeves is developed to improve the tribology characteristics at high temperature. Solid lubricant nano-and microparticles are applied for this purpose. To create the quasi-hydrodynamic lubrication regimes, the solid lubricant powder layer is made by developed pressure impregnation technique. Porous sliding bearing sleeve prototypes were made by powder metallurgy technique. The purpose of the paper is to define the friction and wear characteristics of the sleeves and to determine the influence of sealing of the sliding interface on these characteristics. It is found that application of WS 2 sold lubricant nano-and micro-particles and preservation of a particle leakage out of interface allows to achieve at the high temperature the friction coefficients comparable to those at ambient temperature.Keywords: bearing sleeves, solid lubricant, powder layer, powder metallurgy, nano-and micro-particles Opracowano modyfikację powierzchni bieżni łożysk wykonanych ze stali nierdzewnej w celu poprawy charakterystyki tribologicznej w podwyższonej temperaturze poprzez zastosowanie stałego czynnika smarnego w postaci nano-i mikro-cząstek. W celu wytworzenia warunków kwasi-hydrodynamicznego smarowania, wytworzono warstwę z proszku smarnego na drodze infiltracji ciśnieniowej. Celem pracy było wyznaczenie charakterystyki ściernej i zużyciowej bieżni oraz określenie wpływu uszczelnienia ślizgających się powierzchni na te charakterystyki. Stwierdzono, że zastosowanie WS 2 jako stałego smaru w postaci nano-i mikro-cząstek oraz zabezpieczenie wypływu z granicy fazowej pozwala uzyskać wartość współczynnika tarcia porówny-walną z otrzymywaną dla temperatury otoczenia.

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Mechanisms of ultra-low friction by hollow inorganic fullerene-like MoS2 nanoparticles

Cited by 272 publications

References 13 publications

Friction of low-dimensional nanomaterial systems

Friction of low-dimensional nanomaterial systems

Nano Diesel Soot Particles Reduce Wear and Friction Performance Using an Oil Additive on a Laser Textured Surface

Surface Modification Of The High Temperature Porous Sliding Bearings With Solid Lubricant Nanoparticles

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