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Tribology Letters
Erschienen in: Tribology Letters 1/2011

01.07.2011 | Original Paper

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

verfasst von: Kun Hong Hu, Fei Huang, Xian Guo Hu, Yu Fu Xu, Yi Qun Zhou

Erschienen in: Tribology Letters | Ausgabe 1/2011

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Abstract

A MoS3 precursor deposited on anatase nano-TiO2 is heated at 450 °C in an H2 atmosphere to synthesize MoS2/TiO2 nano-clusters. The nano-clusters are then characterized, and their tribological properties are evaluated. MoS2 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 MoS2 sizes in the MoS2/TiO2 nano-clusters are smaller and their layer distances are larger than those of pure nano-MoS2. The MoS2/TiO2 nano-clusters also present a lower average friction coefficient than pure nano-MoS2, but the anti-wear properties of both the nano-clusters and pure nano-MoS2 are similar. X-ray photoelectron spectroscopy indicates that nano-TiO2 and the element Mo are transferred to the friction surface from the MoS2/TiO2 nano-clusters through a tribochemical reaction. This produces a lubrication film containing TiO2, MoO3, and other chemicals. The nano-MoS2 changes in size and layer distance when combined with nano-TiO2, producing a synergistic effect. This may further be explained using a micro-cooperation model between MoS2 nano-platelets and TiO2 solid nanoparticles.
Vorheriger Artikel A Note on the Two-Spring Tomlinson Model
Nächster Artikel Molecular Dynamics Simulation of Lubricant Redistribution and Transfer at Near-Contact Head-Disk Interface

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Metadaten
Titel
Synergistic Effect of Nano-MoS2 and Anatase Nano-TiO2 on the Lubrication Properties of MoS2/TiO2 Nano-Clusters
verfasst von
Kun Hong Hu
Fei Huang
Xian Guo Hu
Yu Fu Xu
Yi Qun Zhou
Publikationsdatum
01.07.2011
Verlag
Springer US
Erschienen in
Tribology Letters / Ausgabe 1/2011
Print ISSN: 1023-8883
Elektronische ISSN: 1573-2711
DOI
https://doi.org/10.1007/s11249-011-9789-3

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