Characterization and Corrosion Properties of Fluoride Conversion Coating Prepared on AZ31 Magnesium Alloy

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dc.contributor.authorDziková, Juliánacs
dc.contributor.authorFintová, Stanislavacs
dc.contributor.authorKajánek, Danielcs
dc.contributor.authorFlorková, Zuzanacs
dc.contributor.authorWasserbauer, Jaromírcs
dc.contributor.authorDoležal, Pavelcs
dc.coverage.issue6cs
dc.coverage.volume11cs
dc.date.issued2021-06-02cs
dc.description.abstractWrought AZ31 magnesium alloy was used as the experimental material for fluoride conversion coating preparation in Na[BF4] molten salt. Two coating temperatures, 430 degrees C and 450 degrees C, and three coating times, 0.5, 2, and 8 h, were used for the coating preparation. A scanning electron microscope and energy-dispersive X-ray spectroscopy were used for an investigation of the surface morphology and the cross-sections of the prepared coatings including chemical composition determination. The corrosion resistance of the prepared specimens was investigated in terms of the potentiodynamic tests, electrochemical impedance spectroscopy and immersion tests in the environment of simulated body fluids at 37 +/- 2 degrees C. The increase in the coating temperature and coating time resulted in higher coatings thicknesses and better corrosion resistance. Higher coating temperature was accompanied by smaller defects uniformly distributed on the coating surface. The defects were most probably created due to the reaction of the AlxMny intermetallic phase with Na[BF4] molten salt and/or with the product of its decomposition, BF3 compound, resulting in the creation of soluble Na-3[AlF6] and AlF3 compounds, which were removed from the coating during the removal of the secondary Na[MgF3] layer. The negative influence of the AlxMny intermetallic phase was correlated to the particle size and thus the size of created defects.en
dc.formattextcs
dc.format.extent1-19cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationCoatings, MDPI. 2021, vol. 11, issue 6, p. 1-19.en
dc.identifier.doi10.3390/coatings11060675cs
dc.identifier.issn2079-6412cs
dc.identifier.orcid0000-0002-2460-2933cs
dc.identifier.orcid0000-0001-8927-1875cs
dc.identifier.orcid0000-0001-9282-0134cs
dc.identifier.other172151cs
dc.identifier.researcheridD-8198-2018cs
dc.identifier.researcheridH-8743-2017cs
dc.identifier.scopus37072139700cs
dc.identifier.scopus49864860600cs
dc.identifier.scopus36839379300cs
dc.identifier.urihttp://hdl.handle.net/11012/200951
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofCoatings, MDPIcs
dc.relation.urihttps://www.mdpi.com/2079-6412/11/6/675cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2079-6412/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectAZ31 magnesium alloyen
dc.subjectNa[BF4]en
dc.subjectfluoride conversion coatingen
dc.subjectcorrosionen
dc.titleCharacterization and Corrosion Properties of Fluoride Conversion Coating Prepared on AZ31 Magnesium Alloyen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-172151en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:38:20en
sync.item.modts2025.01.17 18:42:40en
thesis.grantorVysoké učení technické v Brně. Fakulta chemická. Ústav chemie materiálůcs
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