AVS 58th Annual International Symposium and Exhibition
    Advanced Surface Engineering Division Thursday Sessions
       Session SE-ThM

Paper SE-ThM9
Design of Catalytically Active Nanostructured Coatings for Severe Tribological Applications

Thursday, November 3, 2011, 10:40 am, Room 104

Session: Nanostructured Thin Films and Coatings
Presenter: Ali Erdemir, Argonne National Laboratory
Authors: A. Erdemir, Argonne National Laboratory
O.L. Eryilmaz, Argonne National Laboratory
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Nanostructured and composite coatings are very unique in the field and offer many attractive properties for a wide range of demanding applications. They can also provide the kind of flexibility that is needed for achieving highly protective, super-slippery boundary films on lubricated tribological surfaces. In this study, we explored the possibility of nano-scale designing of a new class of catalytically active super-hard nitride coatings which when used under boundary lubricated sliding conditions can produce a carbon-rich boundary film. The Raman spectra of the carbon film are similar to that of the diamondlike carbon coatings typically produced by CVD and PVD methods. In a wide range of tribological test systems, such carbon-rich boundary films were shown to provide extreme resistance to scuffing and provide very low friction and wear even under the harshest tribological conditions. In this paper, we will mainly concentrate on the structural and chemical nature of these films and present a hypothetical model to explain their unusual tribological properties under severe contact conditions.