AVS 64th International Symposium & Exhibition
    Tribology Focus Topic Thursday Sessions
       Session TR+AC+TF+VT-ThM

Invited Paper TR+AC+TF+VT-ThM5
Structure Evolution in Tribological Interfaces Studied by Multilayer Model Alloys

Thursday, November 2, 2017, 9:20 am, Room 10

Session: Lubricant, Coatings, and Biotribology
Presenter: Martin Dienwiebel, Karlsruhe Institute for Technology (KIT), Germany
Authors: M. Dienwiebel, Karlsruhe Institute for Technology (KIT), Germany
E. Cihan, Karlsruhe Institute for Technology (KIT), Germany
Correspondent: Click to Email
During sliding of surfaces the near surfaces undergo significant changes in terms of topography, composition and microstructure and a so-called “third body” or “tribomaterial” forms which differs strongly from the bulk materials in terms of topography, composition and microstructure. Initially we use multilayer model alloys of an Au/Ni layer system to study effects of grain size on steady-stady friction by varying the layer spacing and the number of layers. Experiments are performed in a UHV microtribometer, the analysis of microstructure before and after tribological stressing is done by FIB and STEM and the chemistry is investigated by XPS.During sliding of surfaces the near surfaces undergo significant changes in terms of topography, composition and microstructure and a so-called “third body” or “tribomaterial” forms which differs strongly from the bulk materials in terms of topography, composition and microstructure. Initially we use multilayer model alloys of an Au/Ni layer system to study effects of grain size on steady-stady friction by varying the layer spacing and the number of layers. Experiments are performed in a UHV microtribometer, the analysis of microstructure before and after tribological stressing is done by FIB and STEM and the chemistry is investigated by XPS.