Plasma electrolytic oxidation of AZ31 magnesium stents for degradation rate control

Cardiovascular disease caused by the accumulation of atheroma plaques in the coronary arteries and the subsequent decrease in the blood flow through the affected vessel, known as atherosclerosis, is responsible for a high percentage of deaths worldwide. Angioplasty is practiced to treat atherosclero...

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Autores: Muñoz, Marta, Fernández, Juan Pablo, Torres, Belén, Pulido, Nuria, Zhang, Guangqi, Shanov, Vesselin, Moreno, Lara, Matykina, Endzhe, Rams, Joaquín
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/370485
Acceso en línea:http://hdl.handle.net/10261/370485
Access Level:acceso abierto
Palabra clave:AZ31 magnesium alloy
Biodegradable stent
Plasma electrolytic oxidation
Corrosion
Hydrogen evolution
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spelling Plasma electrolytic oxidation of AZ31 magnesium stents for degradation rate controlMuñoz, MartaFernández, Juan PabloTorres, BelénPulido, NuriaZhang, GuangqiShanov, VesselinMoreno, LaraMatykina, EndzheRams, JoaquínAZ31 magnesium alloyBiodegradable stentPlasma electrolytic oxidationCorrosionHydrogen evolutionCardiovascular disease caused by the accumulation of atheroma plaques in the coronary arteries and the subsequent decrease in the blood flow through the affected vessel, known as atherosclerosis, is responsible for a high percentage of deaths worldwide. Angioplasty is practiced to treat atherosclerosis which involves inserting a stent inside the occluded vessel to expand it and restore normal blood flow. In this work, temporary biodegradable stents made of AZ31 magnesium alloy have been fabricated using photo-chemical etching. The stents were coated via plasma electrolytic oxidation (PEO) technique. The radial strength of the stents was evaluated by cyclic compression, and the corrosion protection provided by the PEO coatings was studied by electrochemical and in vitro corrosion tests respectively. The stents showed an optimal maximum radial force of 0.147 N/mm and revealed elastic recuperation lower than 7 % of the total deformation after expansion. The applied PEO coating helped to control the corrosion of the magnesium alloy, delaying its initiation and, once it has started, decreased the degradation rate compared with the bare AZ31 samples. Thus, the stents treated with the PEO coatings developed in this research present promising results for their use as temporary medical devices used in angioplasty.The authors gratefully acknowledge the support of PID2021- 124341OB-C21 and PID2021-124341OB-C22 (MICINN/AEI/FEDER, UE) and ADITIMAT-CM (S2018/NMT-4411, Regional Government of Madrid and EU Structural Funds). The UC team would like to acknowledge the support by NSF through grant EEC-0812348.Peer reviewedElsevierMinisterio de Ciencia e Innovación (España)European CommissionComunidad de MadridConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202420242024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/370485reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-124341OB-C21info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-124341OB-C22https://doi.org/10.1016/j.surfcoat.2024.130539Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3704852026-05-22T06:33:51Z
dc.title.none.fl_str_mv Plasma electrolytic oxidation of AZ31 magnesium stents for degradation rate control
title Plasma electrolytic oxidation of AZ31 magnesium stents for degradation rate control
spellingShingle Plasma electrolytic oxidation of AZ31 magnesium stents for degradation rate control
Muñoz, Marta
AZ31 magnesium alloy
Biodegradable stent
Plasma electrolytic oxidation
Corrosion
Hydrogen evolution
title_short Plasma electrolytic oxidation of AZ31 magnesium stents for degradation rate control
title_full Plasma electrolytic oxidation of AZ31 magnesium stents for degradation rate control
title_fullStr Plasma electrolytic oxidation of AZ31 magnesium stents for degradation rate control
title_full_unstemmed Plasma electrolytic oxidation of AZ31 magnesium stents for degradation rate control
title_sort Plasma electrolytic oxidation of AZ31 magnesium stents for degradation rate control
dc.creator.none.fl_str_mv Muñoz, Marta
Fernández, Juan Pablo
Torres, Belén
Pulido, Nuria
Zhang, Guangqi
Shanov, Vesselin
Moreno, Lara
Matykina, Endzhe
Rams, Joaquín
author Muñoz, Marta
author_facet Muñoz, Marta
Fernández, Juan Pablo
Torres, Belén
Pulido, Nuria
Zhang, Guangqi
Shanov, Vesselin
Moreno, Lara
Matykina, Endzhe
Rams, Joaquín
author_role author
author2 Fernández, Juan Pablo
Torres, Belén
Pulido, Nuria
Zhang, Guangqi
Shanov, Vesselin
Moreno, Lara
Matykina, Endzhe
Rams, Joaquín
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
European Commission
Comunidad de Madrid
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv AZ31 magnesium alloy
Biodegradable stent
Plasma electrolytic oxidation
Corrosion
Hydrogen evolution
topic AZ31 magnesium alloy
Biodegradable stent
Plasma electrolytic oxidation
Corrosion
Hydrogen evolution
description Cardiovascular disease caused by the accumulation of atheroma plaques in the coronary arteries and the subsequent decrease in the blood flow through the affected vessel, known as atherosclerosis, is responsible for a high percentage of deaths worldwide. Angioplasty is practiced to treat atherosclerosis which involves inserting a stent inside the occluded vessel to expand it and restore normal blood flow. In this work, temporary biodegradable stents made of AZ31 magnesium alloy have been fabricated using photo-chemical etching. The stents were coated via plasma electrolytic oxidation (PEO) technique. The radial strength of the stents was evaluated by cyclic compression, and the corrosion protection provided by the PEO coatings was studied by electrochemical and in vitro corrosion tests respectively. The stents showed an optimal maximum radial force of 0.147 N/mm and revealed elastic recuperation lower than 7 % of the total deformation after expansion. The applied PEO coating helped to control the corrosion of the magnesium alloy, delaying its initiation and, once it has started, decreased the degradation rate compared with the bare AZ31 samples. Thus, the stents treated with the PEO coatings developed in this research present promising results for their use as temporary medical devices used in angioplasty.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/370485
url http://hdl.handle.net/10261/370485
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-124341OB-C21
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-124341OB-C22
https://doi.org/10.1016/j.surfcoat.2024.130539
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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