Keywords

Fluorocarbons, Nanotribologic Properties, Nanoparticles

Nanotribologic Friction Study of a Single Fluorinated Graphitized Carbon Nanofiber 

Quantitative nano friction experiments arecarried out on a composite single nanofiber of 200 nm diameter constituted of an inner core of graphitized carbon surrounded by a 50nm thick perfluorinated shell (CF)n. These particles are synthesized at the Institut de Chimie de Clermont Ferrand (France). The structure of the nanofibers is first investigated by Transmission Electron Microscopy on cross section prepared by ultra microtomy on fibers embedded in epoxy resin.The surface of the remaining epoxy block is then ionically polished (FIB + oxygen plasma cleaning technics). Quantitative nanotribologic experiments are then carried out on emerging fibers. Acquired data on the graphitized core and the fluorinated shell are treated in order to deduce the corresponding friction coefficients. The fluorinated shell exhibits a larger friction coefficient than the grahitized core. These data are compared to HOPG graphite and perfluorinated graphite.

Authors and Company/Institution

Philippe Bilas, Jean-Louis Mansot and Philippe Thomas, Groupe de Technologie des Surfaces et des Interfaces (GTSI EA 2432)
Laurent Legras, EDF - R&D, Department MMC and MAI, Avenue des Renardières, Les Renardières, 77818 Moret sur Loing Cedex
Marc Dubois, André Hamwi and Katia Guerin, Clermont Université, Université Blaise Pascal, Institut de Chimie de Clermont-Ferrand (ICCF, UMR 6296), Inorganic Materials Team, 63177 Aubière, France