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EFFECT OF GLYCEROL-2-PHOSPHATE AND EDTA ON THE PREPARATION OF CAP COATING ON AZ31 MAGNESIUM ALLOY UNDER NEUTRAL PH CONDITION

1 DOSKOČIL Leoš
Co-authors:
1 HORÁK Tomáš 1 WASSERBAUER Jaromír 1 WOLANSKÝ Petr 1 BUCHTÍK Martin
Institution:
1 Brno University of Technology, Faculty of Chemistry, Brno, Czech Republic, EU, doskocil@fch.vut.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:
402-407
ISBN:
978-80-88365-12-9
ISSN:
2694-9296
DOI:
https://doi.org/10.37904/metal.2023.4656
Published:
8th January 2024
Proceedings of the conference were published in Web of Science.
Metrics:
248 views / 209 downloads
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Abstract

Magnesium and its alloys are very promising candidates for the development of degradable implants, but their application is limited by high corrosion rates. The corrosion resistance of magnesium materials can be increased by suitable surface treatment. In this work, calcium phosphate (CaP) coatings were hydrothermally prepared with and without organic additives (ethylenedinitrilotetraacetic acid, 2-glycerol- -phosphate) on AZ31 alloy with Mg(OH)2 interlayer. The morphology was dependent on the additive used and the composition of the coatings corresponded to hydroxyapatite. The corrosion resistance of the coatings in 0.15 M NaCl was much higher than that of AZ31 alloys, but the protective function was mainly attributed to the Mg(OH)2 interlayer. The CaP coating could mainly provide biocompatibility.

Keywords: AZ31 alloy, CaP coating, glycerol-2-phosphate, EDTA, corrosion

© 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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