Nitride coatings by reactive ionized magnetron sputtering techniques for harsh environments

In this work, ceramic coatings are designed to meet different technological issues of mechanical components employed for extreme conditions such as high temperature oxidative atmospheres, liquid metals, erosive-corrosive environments. Ta and Ti based binary and ternary nitride films were deposited by High Impulse Magnetron Sputtering (HiPIMS) or using a combination of HiPIMS and DC magnetron sputtering. High-density, adherent coatings, with reduced columnar structure and tailored residual stress were obtained, also on complex-shaped surfaces. Coatings were deposited on traditional and innovative substrates to improve their corrosion and wear resistance in critical environments. Mechanical and tribological properties were explored by nanoindentation, friction, wear and scratch tests. Oxidation and corrosion behavior were investigated too. [1,2] Morphology, composition, crystal structure and thickness were analyzed by SEM-EDS, XPS, XRD, calotest and optical microscopy. [1] C. Badini, S.M. Deambrosis, E. Padovano, M. Fabrizio, O. Ostrovskaya, E. Miorin, G. D'Amico, F. Montagner, S. Biamino, V. Zin, Materials 9 (12) (2016) 961. [2] C. Badini, S.M. Deambrosis, O. Ostrovskaya, V. Zin, E. Padovano, E. Miorin, M. Castellino, and S. Biamino, Ceramics International 43 (2017) 5417-5426.