Degradation Behaviour of Mg0.6Ca and Mg0.6Ca2Ag Alloys with Bioactive Plasma Electrolytic Oxidation Coatings

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dc.contributor.authorMoreno Turiegano, Lara
dc.contributor.authorMohedano Sánchez, Marta
dc.contributor.authorMingo, Beatriz
dc.contributor.authorArrabal Durán, Raúl
dc.contributor.authorMatykina, Endzhe
dc.date.accessioned2023-06-17T12:36:07Z
dc.date.available2023-06-17T12:36:07Z
dc.date.issued2019-06-13
dc.description.abstractBioactive Plasma Electrolytic Oxidation (PEO) coatings enriched in Ca, P and F were developed on Mg0.6Ca and Mg0.6Ca2Ag alloys with the aim to impede their fast degradation rate. Different characterization techniques (SEM, TEM, EDX, SKPFM, XRD) were used to analyze the surface characteristics and chemical composition of the bulk and/or coated materials. The corrosion behaviour was evaluated using hydrogen evolution measurements in Simulated Body Fluid (SBF) at 37 °C for up to 60 days of immersion. PEO-coated Mg0.6Ca showed a 2–3-fold improved corrosion resistance compared with the bulk alloy, which was more relevant to the initial 4 weeks of the degradation process. In the case of the Mg0.6Ag2Ag alloy, the obtained corrosion rates were very high for both non-coated and PEO-coated specimens, which would compromise their application as resorbable implants. The amount of F− ions released from PEO-coated Mg0.6Ca during 24 h of immersion in 0.9% NaCl was also measured due to the importance of F− in antibacterial processes, yielding 33.7 μg/cm2, which is well within the daily recommended limit of F− consumption.
dc.description.departmentDepto. de Ingeniería Química y de Materiales
dc.description.facultyFac. de Ciencias Químicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Economía y Competitividad (MINECO)
dc.description.sponsorshipMinisterio de Ciencia e Innovación (MICINN)
dc.description.sponsorshipComunidad de Madrid/ADITIMAT
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/66156
dc.identifier.doi10.3390/coatings9060383
dc.identifier.issn2079-6412
dc.identifier.officialurlhttps://doi.org/10.3390/coatings9060383
dc.identifier.relatedurlhttps://www.mdpi.com/2079-6412/9/6/383
dc.identifier.urihttps://hdl.handle.net/20.500.14352/12595
dc.issue.number6
dc.journal.titleCoatings
dc.language.isoeng
dc.page.initial383
dc.publisherMDPI
dc.relation.projectIDMAT2015-73355-JIN
dc.relation.projectIDRYC-2017-21843
dc.relation.projectIDADITIMAT-CM (S2018/NMT-4411)
dc.rightsAtribución 3.0 España
dc.rights.accessRightsopen access
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/es/
dc.subject.keywordcorrosion
dc.subject.keywordPEO
dc.subject.keywordbiodegradable implants
dc.subject.ucmMateriales
dc.subject.unesco3312 Tecnología de Materiales
dc.titleDegradation Behaviour of Mg0.6Ca and Mg0.6Ca2Ag Alloys with Bioactive Plasma Electrolytic Oxidation Coatings
dc.typejournal article
dc.volume.number9
dspace.entity.typePublication
relation.isAuthorOfPublication160ef5bd-2d04-4f6c-b028-cb7ce4cf8d38
relation.isAuthorOfPublication6a953ac5-3b84-40fc-a995-2a00ac938151
relation.isAuthorOfPublication427b12dd-40e9-49e6-a8fe-d41e79a056ff
relation.isAuthorOfPublication.latestForDiscovery160ef5bd-2d04-4f6c-b028-cb7ce4cf8d38
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