Abstract
In the present work a comparative study has been carried out on the surface morphology, electrochemical properties and corrosion performance of cerium-Based conversion coatings (CeCCs) on AZ91D and AZ31B magnesium alloys. the as-deposited coatings consisted of a two-layer structure: A continuous Mg/Al oxide transition layer of ∼ 50 nm thick and a CeCC layer of ∼ 400 nm thick. Potentiodynamic polarization and impedance spectroscopy results using a 0.6 wt.% NaCl and 0.6 wt.% (NH4)2SO4 electrolyte showed that cerium-Based conversion coatings enhanced the corrosion resistance of AZ91D and AZ31B magnesium alloys compared to polished uncoated samples. Good correlation of electrochemical test and ASTM B117 salt spray was realized. ©The Electrochemical Society.
Recommended Citation
C. E. Castano et al., "A Comparative Study on the Corrosion Resistance of Cerium-Based Conversion Coatings on AZ91D and AZ31B Magnesium Alloys," ECS Transactions, vol. 41, no. 15, pp. 3 - 12, IOP Publishing, Dec 2012.
The definitive version is available at https://doi.org/10.1149/1.3696866
Department(s)
Materials Science and Engineering
International Standard Book Number (ISBN)
978-160768305-6
International Standard Serial Number (ISSN)
1938-6737; 1938-5862
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 IOP Publishing, All rights reserved.
Publication Date
01 Dec 2012
