Tribometric analysis of two tribo-materials with different contact geometries – critical reflection and simulation of the results

摘要

Tribometers can be used for preselecting tribo-materials in an early development stage. The test set-ups range from simple model tests to complex component tests [1]. All measured tribological variables are not only materialparameters but they also depend on the used tribosystem. Therefore the results of tribometer measurement often cannot be transferred to complex tribological systems or to components. The different test setups can be classified according to the Stri beck-Curve. Typical hydrodynamic running components like camshafts operate in the fully lubricated region of the curve. Tribological damage (like seizing) only occurs if the lubricant film fails, for example due to severe overload. These conditions can be reproducibly obtained by choosing the appropriate tribological model, which operates under boundary lubrication conditions. Two different metallic tribo-materials (Al-based and Cu-based) were investigated by using two different configurations (ball-ondisc, ring-on-disc).