Influence of Microstructures on Tribological Systems - Development of Process and Surface Structure

Requirements are constantly rising for friction and wear reduction of moved components in combustion engines. Numerical simulations and investigations have demonstrated the potential of microstructured surfaces at tribological highly stressed sliding contacts, in particular the cam- tappet contact area. Using the innovative cutting process of single-grain scratching, the microstructures shall be implemented. The requirements of this implementation are defined based on simulations for cam-tappet contacts. After determining boundary conditions an empirical process model for the scratching process is created. It forms the basis for fundamental investigations carried out on the technology development. By conducting subsequent experimental investigations, relationships between the influencing parameters are established. Finally the process model and the results of the experiments lead to a device for integrating this process into existing production chains.