In the automotive industry, there is an increasing demand to apply self-lubricious coatings to reduce fuel and oil consumption. Within this work, self-lubricious nanocomposite coatings consisting of 1-3.5 nm sized CrC nanocrystals embedded in an amorphous hydrogenated carbon (a-C:H) matrix have been developed in a laboratory-scale sputtering system and up-scaled to a production-type plant. The nanostructure and composition of these coatings are presented and correlated to mechanical and tribological properties. With hardness values of about 11 GPa, dry-sliding friction coefficients between 0.08 and 0.18, and wear rates between 3.9 x 10-16 and 2.8 x 10-15m3/N/m, the coatings outperform present state-of-the-art WC/a-C:H coatings and seem to be excellent candidates for applications in automotive engines and drivetrain systems.


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    Titel :

    Self-lubricating chromium carbide/amorphous hydrogenated carbon nanocomposite coatings: a new alternative to tungsten carbide/amorphous hydrogenated carbon


    Beteiligte:
    Mitterer, C. (Autor:in) / Lechthaler, M. (Autor:in) / Gassner, G. (Autor:in) / Fontalvo, G.A. (Autor:in) / Toth, L. (Autor:in) / Pecz, B. (Autor:in) / Raible, M. (Autor:in) / Maier, K. (Autor:in) / Bergmann, E. (Autor:in)


    Erscheinungsdatum :

    2009


    Format / Umfang :

    7 Seiten, 5 Bilder, 23 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch





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