Surface performances of PVD ZrN coatings in biological environments
Article dans une revue avec comité de lecture
Author
RAMOUL, Chams Eddine 
NASSER EDDINE, BELIARDOUHBAHI, R.DJAHOUDI, AbdelghaniWALOCK, Michael J.NOUVEAU, CorinneAbstract
Zirconium nitride (ZrN) thin films were deposited by reactive RF magnetron sputtering on Ti-6Al-4V and Si (100) substrates for potential use in biomedical applications. The tribological behaviour was evaluated against bovine bone in dry condition using a pin-on-disc apparatus. Abrasion is the primary wear mechanism observed in ZrN/bone contact. The corrosion properties were determined through two electrochemical techniques: potentiodynamic polarization and electrochemical impedance spectroscopy. The coatings with reduced oxygen content provided: (i) good resistance against corrosion when exposed to physiological solution and (ii) better anti-bioadhesion against Staphylococcus aureus bacteria.
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