Abstract
The investigations were aimed at establishing the influence of the substrate topography (roughness) on the adhesion of TiN films deposited by high-rate magnetron sputtering and hole-cathode ion plating. The films were deposited on substrates of three grades of steel and one of aluminium alloy. The adhesion was assessed by scratch method by using a self-designed device. Plots of relation between substrate roughness measured by R a parameter and the critical force F CR representing the adhesion were drawn. It was established that for R a > 1 μm the application of TiN films is of no avail should they be exposed to wear in usage. On the other hand, for R a < 1 μm, even a slight improvement in smoothness yields a significant improvement in tribological properties of the coated element. The influence of the substrate material and deposition technology on the tribological properties of TiN films was established.
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