Issue 60, 2018, Issue in Progress
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RSC Advances

Praseodymium-decorated graphene oxide as a corrosion inhibitor in acidic media for the magnesium AZ31 alloy

N. Palaniappan, ORCID logo *a   Ivan. S. Cole,b   F. Caballero-Briones,c   Balasubaramanian K.d  and  C. Lale  

* Corresponding authors

a Central University of Gujarat, India
E-mail: palaniappancecri@rediffmail.com

b Advance Manufacturing and Fabrication Research and Innovation, RMIT University, Melbourne, Vic 3100, Australia

c Instituto Politécnico Nacional, Materials and Technologies for Energy, Health and Environment (GESMAT), CICATA Altamira, Km 14.5 Carretera Tampico-Puerto Industrial Tamps, Mexico

d Department of Materials Engineering, Defence Institute of Advanced Technology, Girinagar, Pune 411025, India

e Harcourt Butler Technical University, Kanpur, India

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.

Graphical abstract: Praseodymium-decorated graphene oxide as a corrosion inhibitor in acidic media for the magnesium AZ31 alloy

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Article information

DOI
https://doi.org/10.1039/C8RA05118F
Article type
Paper
Submitted
14 Jun 2018
Accepted
14 Sep 2018
First published
09 Oct 2018
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2018,8, 34275-34286

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Praseodymium-decorated graphene oxide as a corrosion inhibitor in acidic media for the magnesium AZ31 alloy

N. Palaniappan, Ivan. S. Cole, F. Caballero-Briones, B. K. and C. Lal, RSC Adv., 2018, 8, 34275 DOI: 10.1039/C8RA05118F

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