Quasi-in vivo corrosion behavior of AZ31B Mg alloy with hybrid MWCNTs-PEO/PCL based coatings

This study investigated the effects of multi-walled carbon nanotubes (MWCNTs) and polycaprolactone (PCL) on the quasi-in vivo corrosion behavior of AZ31B Mg alloy treated by plasma electrolytic oxidation (PEO). Thin (∼2 µm, PCTPCL4) and thick (∼60 µm, PCTPCL6) PCL layers were applied only onto the M...

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Authors: Daavari, Morteza, Atapour, Masoud, Mohedano, Marta, Mora Sánchez, Hugo, Rodríguez-Hernández, Juan, Matykina, Endzhe, Arrabal, Raúl, Taherizadeh, Aboozar
Format: article
Status:Published version
Publication Date:2022
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/295971
Online Access:http://hdl.handle.net/10261/295971
Access Level:Open access
Keyword:AZ31B Mg alloy
Plasma electrolyte oxidation (PEO)
Multi-walled carbon nanotubes (MWCNTs)
Quasi-in vivo condition
Polycaprolactone (PCL).
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spelling Quasi-in vivo corrosion behavior of AZ31B Mg alloy with hybrid MWCNTs-PEO/PCL based coatingsDaavari, MortezaAtapour, MasoudMohedano, MartaMora Sánchez, HugoRodríguez-Hernández, JuanMatykina, EndzheArrabal, RaúlTaherizadeh, AboozarAZ31B Mg alloyPlasma electrolyte oxidation (PEO)Multi-walled carbon nanotubes (MWCNTs)Quasi-in vivo conditionPolycaprolactone (PCL).This study investigated the effects of multi-walled carbon nanotubes (MWCNTs) and polycaprolactone (PCL) on the quasi-in vivo corrosion behavior of AZ31B Mg alloy treated by plasma electrolytic oxidation (PEO). Thin (∼2 µm, PCTPCL4) and thick (∼60 µm, PCTPCL6) PCL layers were applied only onto the MWCNTs-PEO coating (PCT) as it showed better corrosion performance. Findings reveal that incorporation of MWCNTs induced several structural and functional modifications in the PEO coating, such as increased roughness, a thicker inner barrier layer, and reduced hydrophilicity. Quasi-in vivo corrosion testing was carried out under controlled temperature, pH, and fluid flow in simulated body fluid (SBF) by electrochemical impedance spectroscopy (EIS) and hydrogen evolution experiments. EIS results revealed that, after 48 h immersion, a diffusion process controlled hydration of the ceramic coatings. Comparison of the collected hydrogen after 15 days of immersion in the quasi-in vivo environment revealed that the PEO and PCT ceramic coatings decreased hydrogen generation by up to 74% and 91%, respectively, compared to non-coated alloy. PCTPCL6 coating exhibited the lowest amount of collected hydrogen (0.2 mL/cm). The thick PCL layer delayed the onset of substrate corrosion for at least 120 h, reducing the corrosion rate by 85% compared with the PCT.The authors gratefully acknowledge the financial support of the Iran National Science Foundation INSF (Grant No. 97014179). This work was also supported by RTI2018–096391-B-C33 (MCIU/AEI/FEDER, UE) and S2018/NMT-4411 (Regional government of Madrid and EU Structural and Social Funds). M. Mohedano is grateful for the support of RYC-2017–21843. We also gratefully acknowledge financial support from the Spanish National Science Foundation (CSIC) and the Ministerio de Ciencia, Innovación y Universidades (MINECO) grant number RTI2018–096328-B-I00. The technical support from Dr. Mariona Cabero during the preparation of TEM cross-section specimens is gratefully acknowledged.ElsevierIranian National Science FoundationMinisterio de Ciencia, Innovación y Universidades (España)Agencia Estatal de Investigación (España)European CommissionComunidad de MadridConsejo Superior de Investigaciones Científicas (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2023202320222023info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/295971reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-096391-B-C33info:eu-repo/grantAgreement/CAM//S2018info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-096328-B-I00http://dx.doi.org/10.1016/j.jma.2021.09.010Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2959712026-05-22T06:33:51Z
dc.title.none.fl_str_mv Quasi-in vivo corrosion behavior of AZ31B Mg alloy with hybrid MWCNTs-PEO/PCL based coatings
title Quasi-in vivo corrosion behavior of AZ31B Mg alloy with hybrid MWCNTs-PEO/PCL based coatings
spellingShingle Quasi-in vivo corrosion behavior of AZ31B Mg alloy with hybrid MWCNTs-PEO/PCL based coatings
Daavari, Morteza
AZ31B Mg alloy
Plasma electrolyte oxidation (PEO)
Multi-walled carbon nanotubes (MWCNTs)
Quasi-in vivo condition
Polycaprolactone (PCL).
title_short Quasi-in vivo corrosion behavior of AZ31B Mg alloy with hybrid MWCNTs-PEO/PCL based coatings
title_full Quasi-in vivo corrosion behavior of AZ31B Mg alloy with hybrid MWCNTs-PEO/PCL based coatings
title_fullStr Quasi-in vivo corrosion behavior of AZ31B Mg alloy with hybrid MWCNTs-PEO/PCL based coatings
title_full_unstemmed Quasi-in vivo corrosion behavior of AZ31B Mg alloy with hybrid MWCNTs-PEO/PCL based coatings
title_sort Quasi-in vivo corrosion behavior of AZ31B Mg alloy with hybrid MWCNTs-PEO/PCL based coatings
dc.creator.none.fl_str_mv Daavari, Morteza
Atapour, Masoud
Mohedano, Marta
Mora Sánchez, Hugo
Rodríguez-Hernández, Juan
Matykina, Endzhe
Arrabal, Raúl
Taherizadeh, Aboozar
author Daavari, Morteza
author_facet Daavari, Morteza
Atapour, Masoud
Mohedano, Marta
Mora Sánchez, Hugo
Rodríguez-Hernández, Juan
Matykina, Endzhe
Arrabal, Raúl
Taherizadeh, Aboozar
author_role author
author2 Atapour, Masoud
Mohedano, Marta
Mora Sánchez, Hugo
Rodríguez-Hernández, Juan
Matykina, Endzhe
Arrabal, Raúl
Taherizadeh, Aboozar
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Iranian National Science Foundation
Ministerio de Ciencia, Innovación y Universidades (España)
Agencia Estatal de Investigación (España)
European Commission
Comunidad de Madrid
Consejo Superior de Investigaciones Científicas (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv AZ31B Mg alloy
Plasma electrolyte oxidation (PEO)
Multi-walled carbon nanotubes (MWCNTs)
Quasi-in vivo condition
Polycaprolactone (PCL).
topic AZ31B Mg alloy
Plasma electrolyte oxidation (PEO)
Multi-walled carbon nanotubes (MWCNTs)
Quasi-in vivo condition
Polycaprolactone (PCL).
description This study investigated the effects of multi-walled carbon nanotubes (MWCNTs) and polycaprolactone (PCL) on the quasi-in vivo corrosion behavior of AZ31B Mg alloy treated by plasma electrolytic oxidation (PEO). Thin (∼2 µm, PCTPCL4) and thick (∼60 µm, PCTPCL6) PCL layers were applied only onto the MWCNTs-PEO coating (PCT) as it showed better corrosion performance. Findings reveal that incorporation of MWCNTs induced several structural and functional modifications in the PEO coating, such as increased roughness, a thicker inner barrier layer, and reduced hydrophilicity. Quasi-in vivo corrosion testing was carried out under controlled temperature, pH, and fluid flow in simulated body fluid (SBF) by electrochemical impedance spectroscopy (EIS) and hydrogen evolution experiments. EIS results revealed that, after 48 h immersion, a diffusion process controlled hydration of the ceramic coatings. Comparison of the collected hydrogen after 15 days of immersion in the quasi-in vivo environment revealed that the PEO and PCT ceramic coatings decreased hydrogen generation by up to 74% and 91%, respectively, compared to non-coated alloy. PCTPCL6 coating exhibited the lowest amount of collected hydrogen (0.2 mL/cm). The thick PCL layer delayed the onset of substrate corrosion for at least 120 h, reducing the corrosion rate by 85% compared with the PCT.
publishDate 2022
dc.date.none.fl_str_mv 2022
2023
2023
2023
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/10261/295971
url http://hdl.handle.net/10261/295971
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#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-096391-B-C33
info:eu-repo/grantAgreement/CAM//S2018
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-096328-B-I00
http://dx.doi.org/10.1016/j.jma.2021.09.010
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
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repository.mail.fl_str_mv
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