STRUCTURE AND CORROSION BEHAVIOUR OF NANOCRYSTALLINE COBALT-MOLYBDENUM ALLOYS ELECTRODEPOSITED ON 316L STAINLESS STEEL

In the present paper, the structure of nanocrystalline Co-Mo alloys electrodeposited on 316L stainless steel is investigated by means of field-emission scanning electron microscopy coupled with energy dispersive spectroscopy (FE-SEM/EDS) and optical profilotnetry. The corrosion behaviour of these alloys is then studied in the Ringer's solution at 37 degrees C. Different electrochemical measurements were performed: cyclic voltamperometry, open circuit potential and electrochemical impedance spectroscopy. The influence of the experimental parameters used during electrodcposition (potential, current, time. composition of the bath...) is also discussed.