Propriétés tribologiques de films minces nanostructurés

Abstract : Tribological properties of nanostructured thin films. In order to determine the tribological properties of nanostructured thin layers of titanium and titanium nitride with thicknesses of 300 nm, we have studied the influence of Berkovich tip’s lateral displacement orientation and normal loading rate on friction properties. For the hardest films (titanium nitride), we have showed that tip direction scratch does not have any effect on tribological properties. A completely different behavior is observed for titanium. For this last case, the measured lateral force is smaller when the scratch test is carried out following forward tip direction. Concerning dynamics effect on scratch measurements, we have established scaling laws for normal displacement versus normal force. We have showed that the relevant parameter for scratch measurements is the loading rate , deduced from these scaling laws. Thus, during scratch tests, the lateral displacement speed must be adapted to the maximum value of the applied normal load.
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Submitted on : Monday, June 17, 2019 - 4:23:58 PM
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A. Jellad, O. Maciejak, S. Labdi. Propriétés tribologiques de films minces nanostructurés. Matériaux & Techniques, EDP Sciences, 2005, 93 (7-8), pp.263-269. ⟨10.1051/mattech:2005014⟩. ⟨hal-02158018⟩

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