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EFFECT OF CITRIC ACID AS A CHELATING AGENT ON THE MICROSTRUCTURE AND COMPOSITION OF HYDROTHERMALLY-PREPARED CAP COATINGS ON AZ31 MAGNESIUM ALLOY

1 HORÁKOVÁ Lenka
Co-authors:
1 WASSERBAUER Jaromír 1 DOSKOČIL Leoš 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:
420-425
ISBN:
978-80-88365-12-9
ISSN:
2694-9296
DOI:
https://doi.org/10.37904/metal.2023.4653
Published:
13th June 2023
Metrics:
142 views / 92 downloads
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Abstract

In this study, the effect of citric acid as a chelating agent on the microstructure, chemical, and phase composition of hydrothermally prepared CaP coatings on AZ31 magnesium alloy was observed. The coatings were deposited in a reaction mixture at pH 5, 7, and 9, where the concentration of the chelating agent was set at 5, 50, and 500 mM, respectively. The microstructure and chemical composition of all deposited coatings were characterized by scanning electron microscopy with an energy dispersive spectrometer (SEM-EDS). The measured data were compared with thermodynamic calculations using Hydra-Medusa chemical equilibrium software.

Keywords: AZ31 magnesium alloy, CaP coatings, citric acid, chelating agent, hydrothermal synthesis

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