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  • Nano- and macro-scale friction of MoS2 nanoparticles
    Kogovšek, Janez, 1984- ...
    We studied the friction properties of the MoS2 nanotubes and commercially accessible MoS2 and graphite crystals. On atomic level we compared these materials under ambient air conditions and in ... ultra-high vacuum (UHV). In bothcases we acquired the measurements with an atomic force microscope (AFM) in lateral force microscopy mode without application of any lubricant. In macroscopic conditions we used a conventional tribological tester and analysed friction properties of the three materials used as additives in base synthetic PAO oil. The AFM results show much higher friction in UHV conditionsthan in air with MoS2 nanoparticles providing the lowest friction inboth environments. MoS2 nanoparticles and micro-crystals provided similarly low friction in base PAO oil in initial stages of sliding, with nanoparticles assuring even slightly lower values. But as the sliding continued, the friction in experiments with oil containing micro-crystals decreased, while itincreased in the case of nanoparticles. These results are discussed on the basis of the friction and wear data and the surface analyses, which we performed using a scanning electron microscope.
    Vir: Development and implementation of enhanced technologies 2011 : proceedings of the 3rd AMES International Conference, Ljubljana, Slovenia, November 29th-30th, 2011 (Str. 126-136)
    Vrsta gradiva - prispevek na konferenci
    Leto - 2011
    Jezik - angleški
    COBISS.SI-ID - 12103707

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