Article (Scientific journals)
Controlling Lateral Size and Thickness of Layered Double Hydroxide (LDH) Used as Conversion Layer for Corrosion Protection of AZ31 Mg Alloy
Malekkhouyan, Roya; Paint, Yoann; Prince, Loïc et al.
2023In Corrosion and Materials Degradation, 4 (1), p. 174-195
Peer reviewed
 

Files


Full Text
cmd-04-00011-v2 (2).pdf
Author postprint (20.22 MB)
Download

All documents in ORBi UMONS are protected by a user license.

Send to



Details



Keywords :
Magnesium; corrosion; conversion coating; layered double hydroxide; epoxy
Abstract :
[en] In the present study, Mg-Al layered double hydroxide (Mg-Al/LDH) was synthesized on the surface of AZ31 Mg alloy substrate via in-situ hydrothermal treatment. Synthesis parameters were changed to determine their effect on the lateral size of LDH. For this purpose, etching in nitric acid and anodizing in sodium hydroxide solution were performed as surface pretreatments. Moreover, the influence of LDH solution pH (10 and 11) on the lateral size of LDH coating was investigated. Morphology, chemical composition, and crystalline structure were characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), Fourier transform infrared (FTIR) spectroscopy, and X-ray diffraction (XRD). The corrosion resistance of the coatings was investigated by H2 measurements, salt spray, and electrochemical impedance spectroscopy (EIS). Moreover, the epoxy coating was applied on the best anti-corrosive LDH sample for assessing the compatibility and effectiveness of LDH on the corrosion properties of the substrate with the epoxy layer. At pH = 11, the lateral size of LDH was smaller than samples at pH = 10. In addition, small-sized LDH, as well as LDH/epoxy coating, revealed enhanced corrosion protection.
Research center :
CRIM - Ingénierie des matériaux
Disciplines :
Materials science & engineering
Author, co-author :
Malekkhouyan, Roya  ;  Université de Mons - UMONS
Paint, Yoann ;  Université de Mons - UMONS ; Materia Nova asbl, Avenue Nicolas Copernic 3, B-7000 Mons, Belgium
Prince, Loïc;  Materials Science Department, UMONS-University of Mons, Place du Parc 20, B-7000 Mons, Belgium
Gonon, Maurice ;  Materials Science Department, UMONS-University of Mons, Place du Parc 20, B-7000 Mons, Belgium
Olivier, Marjorie  ;  Université de Mons - UMONS > Faculté Polytechnique > Service de Science des Matériaux ; Materia Nova asbl, Avenue Nicolas Copernic 3, B-7000 Mons, Belgium
Language :
English
Title :
Controlling Lateral Size and Thickness of Layered Double Hydroxide (LDH) Used as Conversion Layer for Corrosion Protection of AZ31 Mg Alloy
Publication date :
20 March 2023
Journal title :
Corrosion and Materials Degradation
ISSN :
2624-5558
Publisher :
MDPI AG
Volume :
4
Issue :
1
Pages :
174-195
Peer reviewed :
Peer reviewed
Research unit :
F502 - Science des Matériaux
Research institute :
R400 - Institut de Recherche en Science et Ingénierie des Matériaux
Funders :
Fédération Wallonie Bruxelles
Available on ORBi UMONS :
since 15 May 2023

Statistics


Number of views
5 (5 by UMONS)
Number of downloads
1 (1 by UMONS)

Scopus citations®
 
1
Scopus citations®
without self-citations
0
OpenCitations
 
0

Bibliography


Similar publications



Contact ORBi UMONS