Praseodymium-decorated graphene oxide as a corrosion inhibitor in acidic media for the magnesium AZ31 alloy
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Cole, Ivan S
Caballero-Briones, F
Balasubaramanian, K
Lal, C
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Abstract
In the present work, Pr-decorated graphene oxide was synthesized and tested as a corrosion barrier layer in acidic media for the magnesium AZ31 alloy. The morphology, composition and structure of Pr-decorated graphene oxide sheets were characterized via HRTEM, FESEM, Raman, XRD, DLS, UV and FTIR studies. The corrosion inhibition efficiency on the alloy surface was monitored via microstructural and electrochemical methods. The results indicate that Pr-decorated graphene oxide provides improved protection for the Mg AZ31 alloy compared to conventional epoxy coatings. The proposed mechanism arises from a combination of the barrier activities of the composite, GO + Pr, and the epoxy coating on the Mg alloy in acidic media.
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RSC Advances
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8
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60
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© The Author(s) 2018. This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0) License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
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Chemical sciences
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Physical Sciences
Chemistry, Multidisciplinary
Chemistry
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Palaniappan, N; Cole, IS; Caballero-Briones, F; Balasubaramanian, K; Lal, C, Praseodymium-decorated graphene oxide as a corrosion inhibitor in acidic media for the magnesium AZ31 alloy, RSC Advances, 2018, 8 (60), pp. 34275-34286