The Effect of Morphology on the Tribological Properties of MoS2 in Liquid Paraffin

Hu, Kunhong; Hu, Xian; Yu, Xu; Huang, Fei; Liu, Junsheng

doi:10.1007/s11249-010-9651-z

Cited by 145 publications

(82 citation statements)

References 24 publications

(43 reference statements)

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“…1c (2h = 14.1°), the average layer distance of nano-MoS 2 prepared at 450°C is 0.632 nm. Pure nano-MoS 2 prepared at 780°C is reported to have layer distances of *0.625 nm [12]. The layered distance of nano-MoS 2 decreases with increasing calcination temperature, and becomes consistent with that of 2H-MoS 2 (0.615 nm) at 960°C [9].…”

Section: Resultsmentioning

confidence: 71%

“…3a). Pure nano-MoS 2 has 5-10 nm thicknesses, 10-40 nm lengths, and *0.625 nm layer distances [12]. The MoS 2 nanoparticles in Fig.…”

Section: Resultsmentioning

confidence: 95%

“…Although nanoparticles have better lubricating properties, they easily agglomerate during the friction. This agglomeration leads to inhomogeneous lubrication and asymmetrical furrows [12]. For instance, MoS 2 in nano-clusters with small sizes (1-10 nm thicknesses and 10-30 nm lengths) easily enter the contact area to function as a lubricant.…”

Section: Resultsmentioning

confidence: 99%

“…Usable MoS 2 includes inorganic fullerene-like nanoparticles, nano-tubes, nano-spheres, nano-platelets, nano-rods, and so on [7][8][9][10][11]. A previous work reported that the MoS 2 morphology and size can affect its tribological properties [12]. MoS 2 also acts as catalyst for the removal of S from crude oils, and organic chemicals from aqueous solutions [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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Synergistic Effect of Nano-MoS2 and Anatase Nano-TiO2 on the Lubrication Properties of MoS2/TiO2 Nano-Clusters

Huang

et al. 2011

Tribol Lett

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A MoS 3 precursor deposited on anatase nanoTiO 2 is heated at 450°C in an H 2 atmosphere to synthesize MoS 2 /TiO 2 nano-clusters. The nano-clusters are then characterized, and their tribological properties are evaluated. MoS 2 is found to be composed of layered structures with 1-10 nm thicknesses, 10-30 nm lengths, and 0.63-0.66 nm layer distances. The MoS 2 sizes in the MoS 2 / TiO 2 nano-clusters are smaller and their layer distances are larger than those of pure nano-MoS 2 . The MoS 2 /TiO 2 nano-clusters also present a lower average friction coefficient than pure nano-MoS 2 , but the anti-wear properties of both the nano-clusters and pure nano-MoS 2 are similar. X-ray photoelectron spectroscopy indicates that nano-TiO 2 and the element Mo are transferred to the friction surface from the MoS 2 /TiO 2 nano-clusters through a tribochemical reaction. This produces a lubrication film containing TiO 2 , MoO 3 , and other chemicals. The nano-MoS 2 changes in size and layer distance when combined with nano-TiO 2 , producing a synergistic effect. This may further be explained using a micro-cooperation model between MoS 2 nano-platelets and TiO 2 solid nanoparticles.

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Section: Resultsmentioning

confidence: 71%

“…3a). Pure nano-MoS 2 has 5-10 nm thicknesses, 10-40 nm lengths, and *0.625 nm layer distances [12]. The MoS 2 nanoparticles in Fig.…”

Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synergistic Effect of Nano-MoS2 and Anatase Nano-TiO2 on the Lubrication Properties of MoS2/TiO2 Nano-Clusters

Huang

et al. 2011

Tribol Lett

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“…The peaks at~724.6 eV and~710.9 eV (Fig. 8a) were ascribed to the Fe2p1/2 and Fe2p3/2 of -Fe(III)-O-, respectively, the tribological oxidation production of steel [28]. This was also confirmed by the O1s peak at 529.7 eV (Fig.…”

Section: Lubrication Mechanisms Of the Bio-oilsmentioning

confidence: 65%

Influence of Microalgal Bio-Oil on the Lubrication Properties of Engine Oil

Peng

Zheng

et al. 2015

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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-In order to accelerate and expand the application of bio-energy, two kinds of microalgal bio-oils, prepared via co-liquefaction of Chlorella and Spirulina under sub-and supercritical ethanol conditions, were used as partial substitutes for the engine oil CD SAE 15W-40. The friction and wear behaviors of the oils were tested on a four-ball tribometer, referring to the ASTM D4172 standard conditions. The micro-morphology, profiles, roughness and chemical valences of typical elements on the rubbed surfaces were characterized by Scanning Electron Microscopy (SEM), surface profiler and X-ray Photoelectron Spectroscopy (XPS), respectively. The results showed that both of the bio-oils had good lubrication properties. The suitable weight content of the bio-oils in the engine oil was 10%. The lubrication properties of the Bio-Oil (BO sup ) prepared in supercritical ethanol were a little better than those of the Bio-Oil (BO sub ) prepared in subcritical ethanol. The lubricating mechanisms were ascribed to the combined actions of various lubricating films, including boundary lubrication, and deposited films and tribological chemical reaction films. The stronger tribological chemical effects of BO sup from higher contents of N-containing compounds contributed to its better lubrication properties than those of BO sub .Résumé -Influence de bio-huiles issues d'algues sur les propriétés de lubrification d'une huile moteur -Afin d'accélérer et d'étendre l'application des bioénergies, deux types de bio-huiles issues d'algues, préparées par co-liquéfaction de Chlorella et Spirulina dans de l'éthanol à l'état sous-et supercritiques, ont été utilisés comme substituts partiels de l'huile moteur CD SAE 15W-40. Les comportements d'usure et de frottement avec ces huiles ont été testés sur un tribomètre à quatre billes, en se référant aux conditions de la norme ASTM D4172. La micromorphologie, les profils et la rugosité de surface ainsi que les valences chimiques des éléments typiques sur les surfaces frottées ont été respectivement caractérisés par une microscopie à balayage électronique (SEM, Scanning Electron Microscopy), par un profilomètre de surface et par spectroscopie photo-électronique des rayons X (XPS, X-ray Photoelectron Spectroscopy). Les résultats ont montré que les bio-huiles avaient toutes deux de bonnes propriétés de lubrification. La teneur en poids adaptée des bio-huiles dans l'huile moteur était de 10 %. Les propriétés de lubrification de la bio-huile (BO sup ) préparée dans de l'éthanol supercritique ont été légèrement meilleures que celles de la bio-huile (BO sub ) préparée dans de l'éthanol sous-critique. Les mécanismes de lubrification ont été attribués aux actions combinées de différents films de lubrification (y compris un graissage à film d'huile, et de films de dépôts) et de films de réaction chimique tribologiques. Les effets tribo-chimiques plus forts de l'huile BO sup contenant des teneurs supérieures en composés contenant de l'azote ont contribué à rendre ses propriétés de lubrification supérieur...

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Tribological and thermal properties of hexagonal boron nitride filled high‐performance polymer nanocomposites

Joshi¹,

Goyal

Patil³

et al. 2016

J of Applied Polymer Sci

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High‐performance polymer nanocomposites based on poly(aryletherketone) (PAEK) as matrix and hexagonal boron nitride (h‐BN) nanopowder as reinforcement were fabricated using planetary ball mill followed by hot pressing. The addition of h‐BN (0–5 wt %) to the matrix enhanced the microhardness and thermal stability compared to pure matrix. For a constant sliding speed, the wear rate of the nanocomposites determined by using Pin‐on‐Disk tribometer was reduced approximately 22 times compared to pure matrix. The coefficient of friction of the nanocomposites is slightly increased but it is stable compared to that of pure matrix. It was also investigated that the thermal stability of the debris of the nanocomposites was decreased compared to the pure matrix and its nanocomposites. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44409.

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The Effect of Morphology on the Tribological Properties of MoS2 in Liquid Paraffin

Cited by 145 publications

References 24 publications

Synergistic Effect of Nano-MoS2 and Anatase Nano-TiO2 on the Lubrication Properties of MoS2/TiO2 Nano-Clusters

Synergistic Effect of Nano-MoS2 and Anatase Nano-TiO2 on the Lubrication Properties of MoS2/TiO2 Nano-Clusters

Influence of Microalgal Bio-Oil on the Lubrication Properties of Engine Oil

Tribological and thermal properties of hexagonal boron nitride filled high‐performance polymer nanocomposites

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