Green corrosion inhibitors intercalated Mg:Al layered double hydroxide coatings to protect Mg alloy

Mg alloy was protected with Mg:Al layered double hydroxide (LDH) coating intercalated with three green corrosion inhibitors (sodium benzoate, 3-aminopropyltriethoxysilane and 8-hydroxyquinoline). The in-situ hydrothermal approach was adopted to intercalate corrosion inhibitors into Mg:Al LDH coating...

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Bibliographic Details
Published in:Rare metals 2021-08, Vol.40 (8), p.2254-2265
Main Authors: Anjum, Muhammad Junaid, Zhao, Jing-Mao, Asl, Vahdat Zahedi, Malik, Muhammad Uzair, Yasin, Ghulam, Khan, Waheed Qamar
Format: Article
Language:English
Subjects:
Aluminum
Aminopropyltriethoxysilane
Biomaterials
Chemistry and Materials Science
Coatings
Corrosion
Corrosion inhibitors
Corrosion mechanisms
Corrosion prevention
Corrosion resistance
Corrosion resistant alloys
Energy
Fourier transforms
Functional groups
Hydroxides
Hydroxyquinoline
Infrared spectroscopy
Magnesium base alloys
Materials Engineering
Materials Science
Metallic Materials
Morphology
Nanoscale Science and Technology
Original Article
Photoelectrons
Physical Chemistry
Sodium benzoate
Spectrum analysis
X ray photoelectron spectroscopy
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Summary:Mg alloy was protected with Mg:Al layered double hydroxide (LDH) coating intercalated with three green corrosion inhibitors (sodium benzoate, 3-aminopropyltriethoxysilane and 8-hydroxyquinoline). The in-situ hydrothermal approach was adopted to intercalate corrosion inhibitors into Mg:Al LDH coating. The intercalated Mg:Al LDH coating was successfully acquired, and the crystalline structure of Mg:Al LDH coating was verified with X-ray diffraction (XRD). The organic functional groups of corrosion inhibitors were identified with the help of Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). The compact and uniform morphology was confirmed by scanning electron microscopy (SEM). The electrochemical measurement revealed better corrosion resistance of corrosion inhibitor-intercalated Mg:Al LDH coatings as compared to that of pristine Mg alloy. The corrosion protection mechanism of corrosion inhibitors was described and unearthed the corrosion inhibitor with the best performance.
ISSN:1001-0521
1867-7185
DOI:10.1007/s12598-020-01538-7