Abstract
The lubrication properties of MoS 2 have been described in terms of electronic interactions between MoS 2 sheets calculated through slab periodic density functional calculations. This approach is supported by experimental works on the ultrahigh vacuum friction of MoS 2 coatings of thicknesses in the micrometer range (Phys. Rev. 48 (14) (1993) 10583), and in boundary lubrication by molybdenum containing organic compounds, such as molybdenum dithiocarbamate (J. Vac. Sci. Technol. A 17 (1999) 884). In this latter case we have shown that the friction reducing effect is ensured by in situ formed MoS 2 single sheets.
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