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Nickel and iron alloy lms have been extensively studied owing to their numerous applications in recording media and semiconductor technology¹. They are also used as protection covers for elements working in an aggressive environment². The synthesis of thin layers^3-5 knew a growing interest because of their physical properties that are more interesting than massive materials of even the same composition.

Electrochemical deposition might be an alternative method for the synthesis of metallic lms. It oers the advantages of low synthesis temperature and low cost in comparison with other deposition techniques and provides the possibility of control over the amount of the deposited materials. The present work deals with the comparative study of direct and pulsed electrodeposition of Fe-Ni in order to optimize the deposits features.

Iron-Nickel lms electrodeposited from sulfate baths have been investigated.The inuence of applied potentials and electrodeposition mode on the electrochemical growth and the characteristics of the Fe-Ni alloy were studied by means of cyclic voltammetry, potentiostatic steps (chronoamperometry), atomicforce microscopy (AFM) and X-ray diraction (XRD) techniques. The electrocrystallization mechanism was analyzed using the Scharifker-Hills model. Corrosion behavior of Fe-Ni alloys, electrodeposited onto E24 stainless steels, has been studied in 3.5 wt % NaCl solution by anodic polarization and electrochemical impedance spectroscopy.