Article (Scientific journals)
Self-healing plasma electrolytic oxidation (PEO) coating developed by an assembly of corrosion inhibitive layer and sol-gel sealing on AA2024
Akbarzadeh, Sajjad; Coelho, Leonardo Bertolucci; Dangreau, Lisa et al.
2023In Corrosion Science, 222, p. 111424
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Keywords :
AA2024; GDOES; Plasma electrolytic oxidation; Sol-gel sealing; SVET; Aa2024; Plasma electrolytic oxidation coatings; Porous structures; Self-healing; Self-healing properties; Sol'gel; Chemistry (all); Chemical Engineering (all); Materials Science (all); General Materials Science; General Chemical Engineering; General Chemistry
Abstract :
[en] The inherent porous structure of PEO coatings is regarded as a drawback for long-term protection. In this investigation, the presence of pores and defects in the PEO coating was exploited as reservoirs for corrosion inhibitors to generate self-healing properties on AA2024. Smart coating systems were fabricated on the PEO layer in which 8-hydroxyquinoline (8-HQ) and benzotriazole (BTA) were employed as corrosion inhibitive layers followed by a sol-gel sealing. The protective performance relies on the mechanical interlocking between the sol-gel coating and the sublayer plus the sealing ability of the sol-gel in the presence of the intermediate layer.
Research center :
CRIM - Ingénierie des matériaux
Disciplines :
Materials science & engineering
Author, co-author :
Akbarzadeh, Sajjad ;  Université de Mons - UMONS > Faculté Polytechniqu > Service de Science des Matériaux
Coelho, Leonardo Bertolucci;  Materials Science Department, Faculty of Engineering, University of Mons, Mons, Belgium ; ChemSIN – Chemistry of Surfaces, Interfaces and Nanomaterials, Université libre de Bruxelles (ULB), Brussels, Belgium
Dangreau, Lisa;  Materia Nova Research Centre, Mons, Belgium
Lanzutti, Alex ;  Department of Chemistry Physics and Environment, University of Udine, Udine, Italy
Fedrizzi, Lorenzo;  Department of Chemistry Physics and Environment, University of Udine, Udine, Italy
Olivier, Marie-Georges  ;  Université de Mons - UMONS > Faculté Polytechniqu > Service de Science des Matériaux ; Materia Nova Research Centre, Mons, Belgium
Language :
English
Title :
Self-healing plasma electrolytic oxidation (PEO) coating developed by an assembly of corrosion inhibitive layer and sol-gel sealing on AA2024
Publication date :
September 2023
Journal title :
Corrosion Science
ISSN :
0010-938X
Publisher :
Elsevier Ltd
Volume :
222
Pages :
111424
Peer reviewed :
Peer Reviewed verified by ORBi
Research unit :
F502 - Science des Matériaux
Research institute :
R400 - Institut de Recherche en Science et Ingénierie des Matériaux
Name of the research project :
4573 - SEALCERA - Corrosion and tribocorrosion performance of sealed ceramic coatings obtained by plasma electrolytic oxidation - Fédération Wallonie Bruxelles
Funding text :
The authors would like to warmly acknowledge the financial support from the University of Mons in the framework of the ARC (Action de Recherche collective) 2018 SEALCERA project (Fédération Wallonie Bruxelles). The author L.B. Coelho is a Postdoctoral Researcher at the Fonds de la Recherche Scientifique – FNRS (Belgium) which is gratefully acknowledged. Last but not least, the authors appreciate the efforts of Alexandre Mégret from the Metallurgy Department of the University of Mons in performing the GIXRD analysis.
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since 25 December 2023

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