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Electrochemical Impedance Spectroscopy Behavior of Nanometric Al-Cr and Cr-Al Coatings by Magnetron Sputtering

Multilayer and bilayers structures have attracted much attention as a way of improving the mechanical and corrosion resistance properties of protective coatings. In this work the application of nanometric Al/Cr and Cr/Al bilayers deposited on AA2024-T3, AA60601-T6 aluminum alloys and AISI 9840 steel...

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Bibliographic Details
Main Authors: Castillo Morquecho, Jorge, López Meléndez, C., Flores Zamora, M.I., Bautista Margulis, Raúl German, Esparza Ponce, Hilda Esperanza, Almeraya Calderón, Facundo, Gaona Tiburcio, Citlalli, Martínez Villafañe, A.
Format: Article
Language:English
Published: Electrochemical Science Group 2012
Subjects:
QD Química
Online Access:http://eprints.uanl.mx/25454/1/25454.pdf
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Summary:Multilayer and bilayers structures have attracted much attention as a way of improving the mechanical and corrosion resistance properties of protective coatings. In this work the application of nanometric Al/Cr and Cr/Al bilayers deposited on AA2024-T3, AA60601-T6 aluminum alloys and AISI 9840 steel by magnetron sputtering and DC sputtering was studied. The materials were characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and electrochemical impedance spectroscopy (EIS) in order to consider their application as high corrosion resistance coatings. The corrosion behavior of the films was studied using a NaCl aqueous solution (3.5 wt %)

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