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Tribology Letters

01.01.2010 | Original Paper

Synthesis and Tribological Performance of Novel Mo_xW_1−xS₂ (0 ≤ x ≤ 1) Inorganic Fullerenes

verfasst von: Johny Tannous, Fabrice Dassenoy, Andrew Bruhács, Wolfgang Tremel

Erschienen in: Tribology Letters | Ausgabe 1/2010

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Abstract

Inorganic fullerene-like (IF) MoS₂ and WS₂ nanoparticles were found to be good friction modifiers and anti-wear additives when dispersed in a lubricant. Their tribological performance seems to be related to the structure, size, and shape of these nanomaterials. The present study describes the tribological properties of a new inorganic fullerene IF-Mo_xW_1−xS₂ containing both molybdenum and tungsten disulfide under boundary lubrication. Mo_xW_1−xS₂ amorphous inorganic fullerene nanostructures were synthesized by means of MOCVD using an induction furnace setup. The average diameters range from 25 to 45 nm. Upon variation of the amounts of precursors and S, various solid solutions of IF-Mo_xW_1−xS₂ were obtained. In addition, a morphological, chemical, and structural analysis of the samples was performed using high resolution scanning electron microscopy (HRSEM), transmission electron microscopy (TEM), and X-ray powder diffraction (XRD). Friction experiments were carried out with a ball-on-flat contact using an environmental tribometer. The results show interesting friction reducing and wear properties of these nanomaterials. The change in the molecule stoichiometry, which led to a variation of particles size but also to a variation of the crystallinity of the particles, affects the tribological performance.

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Titel: Synthesis and Tribological Performance of Novel Mo x W1−x S2 (0 ≤ x ≤ 1) Inorganic Fullerenes
verfasst von: Johny Tannous
Fabrice Dassenoy
Andrew Bruhács
Wolfgang Tremel
Publikationsdatum: 01.01.2010
Verlag: Springer US
Erschienen in: Tribology Letters / Ausgabe 1/2010
Print ISSN: 1023-8883
Elektronische ISSN: 1573-2711
DOI: https://doi.org/10.1007/s11249-009-9493-8

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