Corrosion behaviour of CrN/Cr multilayers on stainless steel deposited by unbalanced magnetron sputtering
By Chipatecua, Y.L.; Olaya, J.J. & Arias, Diego F.
Published in Vacuum
NULL
2012
Abstract
This paper reports the results of the influence of bilayer period (Λ) and total thickness (f) on the corrosion resistance of magnetron-sputtered CrN/Cr multilayers. Corrosion tests were carried out by potentiodynamic polarization with 0.5 M H2SO4 + 0.05 M KSCN solution and electrochemical impedance spectroscopy (EIS) with 3% NaCl solution. Measurements were also taken on the uncoated substrate and hard chromium coatings for comparison. Multilayer microstructure and morphology were studied by X-ray diffraction (XRD), atomic force microscopy (AFM) and scanning electron microscopy (SEM) and chemical composition was studied by energy dispersive X-ray analysis (EDX).
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