In situ growth of corrosion resistant Mg-Fe layered double hydroxide film on Q235 steel.
J Colloid Interface Sci
; 610: 202-212, 2022 Mar 15.
Article
de En
| MEDLINE
| ID: mdl-34922076
ABSTRACT
HYPOTHESIS:
In situ grown layered double hydroxide (LDH) is commonly used one of the anticorrosion ways for metal materials; Due to the dense growth of LDH on the metal surface, its special layered structure can effectively delay the corrosion rate of metal.METHODS:
In this study, we use a hydrothermal method to successfully grow Mg-Fe LDH film on steel substrates based on self-supplied Fe3+ ions. The films were characterized by X-ray diffraction, scanning electron microscopy, and X-ray energy dispersive spectrometry. The potential corrosion resistance of the obtained Mg-Fe LDH film was confirmed using electrochemical impedance spectroscopy and polarization curves.FINDINGS:
After systematic adjustment and parameter optimization, it was found that Mg-Fe LDH film exhibited the best growth morphology and comprehensive performance with an initial pH value of 10, Mg2+/urea ratio of 14 and reaction time of 12â¯h. The SEM and electrochemical results further demonstrated that Mg-Fe LDH film play a good protection effect on carbon steel surface. This study provides an important reference for the processing of anticorrosion LDHs film.Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Acier
/
Hydroxydes
Langue:
En
Journal:
J Colloid Interface Sci
Année:
2022
Type de document:
Article