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EFFECT OF PRECURSOR CONCENTRATION IN THE REACTION MIXTURE ON THE MORPHOLOGY AND CORROSION BEHAVIOUR OF MGAL-LDH COATINGS ON AZ31 MAGNESIUM ALLOY

1 HORÁKOVÁ Lenka
Co-authors:
1 DOSKOČIL Leoš 1 WASSERBAUER Jaromír 1 BŘEZINA Matěj 1 BUCHTÍK Martin
Institution:
1 Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Brno, Czech Republic, EU, xcknoflickova@vutbr.cz
Conference:
32nd International Conference on Metallurgy and Materials, Orea Congress Hotel Brno, Czech Republic, EU, May 17 - 19, 2023
Proceedings:
Proceedings 32nd International Conference on Metallurgy and Materials
Pages:
386-391
ISBN:
978-80-88365-12-9
ISSN:
2694-9296
DOI:
https://doi.org/10.37904/metal.2023.4655
Published:
8th January 2024
Proceedings of the conference were published in Web of Science.
Metrics:
238 views / 164 downloads
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Abstract

The aim of the present study was to investigate the effect of the concentration of precursors in the reaction mixture on the microstructure and electrochemical corrosion properties of MgAl-LDH coatings deposited on magnesium alloy AZ31. The concentrations of precursors Mg(NO3)2 and Al(NO3)3 were set to 0.10, 0.05, and 0.02 M and 0.10, 0.05, and 0.02 M, respectively. The deposition time ranged from 12 to 48 hours. The microstructure of LDH coatings and their chemical composition were characterized by scanning electron microscopy with an energy dispersive spectrometer (SEM-EDS). Electrochemical corrosion properties were evaluated using potentiodynamic polarization in 0.15 M NaCl solution.

Keywords: AZ31, magnesium alloy, LDH, hydrothermal synthesis, potentiodynamic measurement

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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