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Doublely-doped Mg-Al-Ce-V2O74- LDH composite film on magnesium alloy AZ31 for anticorrosion
- Source :
- Journal of Materials Science & Technology. 64:66-72
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- A doublely-doped layered double hydroxide (LDH) film was produced on an anodized magnesium alloy AZ31. The Ce-doped Mg-Al LDH film was prepared by in-situ hydrothermal treatment method, and the intercalation of vanadate was realized by ion-exchange reaction. The structure, morphology and composition of as-prepared LDH film were investigated by X-ray diffractometer, field-emission scanning electronic microscope and energy dispersive spectrometry. Results indicated that a uniform and compact LDH film was formed and the intercalation of Ce3+ and vanadate would change the crystal structure of LDHs. The results of the potentiodynamic polarization, electrochemical impedance spectra, hydrogen evolution and corrosion weight loss tests showed the Ce3+ and vanadate anions significantly improve the impedance of LDH film, and the active double-doped LDH film could effectively protect the magnesium substrate from corrosion.
- Subjects :
- Materials science
Polymers and Plastics
Magnesium
Anodizing
Mechanical Engineering
Intercalation (chemistry)
Metals and Alloys
chemistry.chemical_element
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Corrosion
chemistry.chemical_compound
chemistry
Mechanics of Materials
Materials Chemistry
Ceramics and Composites
Hydroxide
Vanadate
Magnesium alloy
0210 nano-technology
Nuclear chemistry
Diffractometer
Subjects
Details
- ISSN :
- 10050302
- Volume :
- 64
- Database :
- OpenAIRE
- Journal :
- Journal of Materials Science & Technology
- Accession number :
- edsair.doi...........3e7f6445d09c709fe77f4342fb69a96b