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Consideration of thin films such as deposition of TiAlN or AlTiN on DMLS (direct metal laser sintered)titanium-based implants is a new biomedical trend. The present study encompassed the investigations of hardness,Young modulus, adhesion of TiAlN and AlTiN magnetron sputtered coatings deposited on DMLS (direct metal lasersintering) of Ti6Al4V substrate. The titanium based substrate was manufactured in the DSLM process by meansof 3D EOSINT M280 printer for metals supplied by EOS. The surface morphology of specimens was examinedusing the Dektak 150 profilometer (Veeco Instruments Inc., USA). The mechanical properties (hardness, Young’smodulus) of nitride coatings and the substrate were tested by means of Ultra Nanoindentation Tester (Anton PaarGmbH, Germany). The values of hardness and elastic modulus were calculated from the load–displacement dataaccording to the Oliver Pharr method. The adhesion of deposited coatings was determined by means of the scratchtest and Rockwell test. Scratch tests were performed on a Micro Combi Tester (Anton Paar GmbH, Germany)according to the ASTM C1624−05(2015) standard for ceramic coatings scratch testing. It was found that TiAlNas well as AlTiN films were characterised by excellent adhesion to DMLS titanium-based substrate as well assufficient morphology and mechanical properties.
