ZE10 MAGNESIUM ALLOY CORROSION PROPERTIES IMPROVEMENT BY UNCONVENTIONAL FLUORIDE CONVERSION COATING

1 WASSERBAUER Jaromír
Co-authors:
1,2 DRÁBIKOVÁ Juliána 1,3 FINTOVÁ Stanislava 1,4 DOLEŽAL Pavel 2 HADZIMA Branislav
Institutions:
1 Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Brno, Czech Republic, EU, wasserbauer@fch.vut.cz
2 Research Centre of the University of Žilina, University of Žilina, Žilina, Slovakia, EU
3 Institute of Physics of Materials, Academy of Sciences of the Czech Republic, Brno, Czech Republic, EU
4 Institute of Materials Science and Engineering, Faculty of Mechanical Engineering, Brno University of Technology, Brno, Czech Republic, EU
Conference:
28th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 22nd - 24th 2019
Proceedings:
Proceedings 28th International Conference on Metallurgy and Materials
Pages:
897-902
ISBN:
978-80-87294-92-5
ISSN:
2694-9296
Published:
4th November 2019
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
20 views / 7 downloads
Abstract

The paper offers an analysis of the fluoride conversion coating prepared on ZE10 magnesium alloy with the aim to improve material corrosion properties with respect to the biocompatibility of the alloy. The coating was prepared via unconventional process, by immersion of the alloy in Na[BF4] molten salt at 430 and 450 °C for various treatment times. The coating was analysed in terms of scanning electron microscopy, energy dispersive X-ray spectroscopy and electrochemical impedance spectroscopy. The coating was shown to be compact and homogenous with intermetallic particles incorporated in the coating. Significantly higher values of the polarization resistance were estimated for the coated specimens when compared to the untreated ZE10 alloy in simulated body fluid solution at 37 ± 2 °C.

Keywords: Wrought ZE10 magnesium alloy, fluoride conversion coating, corrosion, electrochemical impedance spectroscopy.
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