Resistencia a la corrosión de recubrimientos de CrN depositados por PVD con UBM: tecnología eficiente y ambientalmente limpia

摘要: In this work, we studied the influence of magnetic field configuration on resistance to corrosion CrN coatings, obtained in a system Unbalanced Magnetron Sputtering (UBM). The different configurations from were quantified through geometric unbalanced coefficient KG. microstructure was analyzed by means scanning electronic microscopy (SEM), and phases preferential orientations with X ray diffraction (XRD). Tafel polarization 0,5M H 2SO 4 - 0,05M KSCN solution spectroscopy electrochemical Impedance using NaCl 3% solution. general, influenced orientation coatings: With KG = 1.3 films had (200) 0.85 (111) mixed orientation. Smaller rates observed coatings deposited AISI 304 steel substrates 1.3.