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S.A. Glatz, C.M. Koller, R. Rachbauer, S. Kolozsvári, H. Riedl, P.H. Mayrhofer:
"Increasing mechanical and tribological properties of cathodic arc evaporated Ti-Al-N coatings by Mo- and W-alloying";
Talk: 43rd International Conference on Metallurgical Coatings and Thin Films (ICMCTF), San Diego (USA); 2016-04-25 - 2016-04-29; in: "Book of Abstracts", (2016), 74.

Ever growing demands in improving cutting and forming processes require application-oriented adaptations of already well-established coating systems, as for instance Ti1-xAlxN, which is known for its outstanding thermo-mechanical properties. However, wear resistance and friction behaviour are also determining factors of the coatings´ efficiency during application. For this reason, tailoring the tribological behaviour of Ti1-xAlxN by alloying additional elements, in our specific case molybdenum (Mo) and tungsten (W), is of particular interest for industry. Therefore, we study the effect of alloying elements (Mo, W) on the microstructure, mechanical properties, and tribological behaviour of Ti1-xAlxN. The Ti/Al-ratio was kept constant with 1 and the Mo or W contents were 0, 2, 5, and 10 at% of the metal content. Ti1-x-yAlxMoyN and Ti1-x-yAlxWyN thin films were grown in an industrially-scaled batch-type cathodic arc evaporation facility using powder-metallurgically produced Ti1-x-yAlxMoy and Ti1-x-yAlxWy targets. Subsequently, the coatings are characterised with respect to chemical composition, morphology and structural development. The chemical composition showed no significant dependence on the applied bias potential variation between -40 and -120 V, whereas , the tribological performance-studied by pin-on-disc tests and non-contact optical profilometry-of Ti1-xAlxN coatings significantly depends on the Mo and W content.