Proceedings of SerbiaTrib '13

parameter, Sv, was slightly influenced by themodification of the applied normal load.In the case of Ti6Al4V/Al 2 O 3 contact pair theroughness parameters that changed with increasingapplied normal load are Sa (figure 6a), Sq (figure6b) şi Sy (figure 6c).Figure 4. Evolution of the profiles with the appliednormal loadaabbFigure 5. Evolution of the weight loss with increasingapplied normal load: a Ti6Al4V/Al2O3 and b.Ti6Al4V/steel ballOn the other hand, in the case of Ti6Al4V/Al 2 O 3contact pair can be observed that the weight loss ofthe alumina ball increases with increasing appliednormal load (figure 5b).In the case of Ti6Al4V/Al 2 O 3 contact pair canbe observed a constant variation of the weight lossof the alumina ball counterpart (figure 5a) while inthe case of Ti6Al4V/steel ball to the steel ballcounterpart (figure 5b). Also, the weight loss washigher is the case of the steel ball counterpartcompared to the alumina ball counterpart.The evolution of the roughness parameters withincreasing applied normal load over the functionalintegrity (figure 6) shows that in the case ofTi6Al4V/steel ball contact pair the roughnesscdFigure 6. Evolution of the roughness parameterswith increasing applied normal load13 th International Conference on Tribology – Serbiatrib’13 83