IMPROVING THE CORROSION RESISTANCE OF AZ31 MAGNESIUM ALLOY BY PREPARING HYDROXYAPATITE WITH A SUPERHYDROPHOBIZED SURFACE

1 HONČ Jiří
Co-authors:
1 BUCHTÍK Martin 1 WASSERBAUER Jaromír 1 DOSKOČIL Leoš
Institution:
1 Brno University of Technology, Faculty of Chemistry, Brno, Czech Republic, EU, doskocil@fch.vut.cz
Conference:
30th Anniversary International Conference on Metallurgy and Materials, Brno, Czech Republic, EU, May 26 - 28, 2021
Proceedings:
Proceedings 30th Anniversary International Conference on Metallurgy and Materials
Pages:
717-722
ISBN:
978-80-87294-99-4
ISSN:
2694-9296
Published:
15th September 2021
Proceedings of the conference have already been published in Scopus and we are waiting for evaluation and potential indexing in Web of Science.
Metrics:
148 views / 54 downloads
Abstract

Magnesium and its alloys are promising materials that have potential mainly in the field of transport (e.g. automobile industry) and medicine (e.g. orthopedic implants). Their disadvantage is poor corrosion resistance, which limits their wider use in practice. Therefore, surface treatment by various methods is performed in order to improve corrosion protection. The preparation of a superhydrophobic coating is an interesting approach because the hydrophobic coating minimizes contact of the corrosion medium with the magnesium substrate. In this work, the hydrothermally prepared hydroxyapatite coating on AZ31 magnesium alloy was superhydrophobized by myristic acid. The prepared coatings were characterized by determining contact angle and surface analysis using a scanning electron microscopy with energy dispersive spectroscopy and Fourier transformed infrared spectroscopy. The corrosion resistance of modified surfaces was examined by potenciodynamic polarization in 3.5 % NaCl.

Keywords: Corrosion, AZ31 magnesium alloy, hydroxyapatite coating, superhydrophobization

© 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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