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Biodegradation behaviour of Fe-based alloys in Hanks’ Balanced Salt Solutions: Part I. material characterisation and corrosion testing

Research on Fe-based biodegradable alloys for implant applications has increased considerably over the past decade. However, there is limited information on the influence of testing electrolytes on corrosion product formation and general corrosion progress. In this work, the effect of Hanks’ Balance...

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Autores principales: Tonna, Christabelle, Wang, Cheng, Mei, Di, Lamaka, Sviatlana V., Zheludkevich, Mikhail L., Buhagiar, Joseph
Formato: Online Artículo Texto
Lenguaje:English
Publicado: KeAi Publishing 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8379481/
https://www.ncbi.nlm.nih.gov/pubmed/34466743
http://dx.doi.org/10.1016/j.bioactmat.2021.05.048
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author Tonna, Christabelle
Wang, Cheng
Mei, Di
Lamaka, Sviatlana V.
Zheludkevich, Mikhail L.
Buhagiar, Joseph
author_facet Tonna, Christabelle
Wang, Cheng
Mei, Di
Lamaka, Sviatlana V.
Zheludkevich, Mikhail L.
Buhagiar, Joseph
author_sort Tonna, Christabelle
collection PubMed
description Research on Fe-based biodegradable alloys for implant applications has increased considerably over the past decade. However, there is limited information on the influence of testing electrolytes on corrosion product formation and general corrosion progress. In this work, the effect of Hanks’ Balanced Salt Solution (HBSS) with or without Ca(2+) on the corrosion of Fe, Fe35Mn and (Fe35Mn)5Ag powder-processed coupons has been studied using potentiodynamic polarisation, Electrochemical Impedance Spectroscopy (EIS), and preliminary localised measurement of pH and dissolved oxygen concentration in close proximity to the metal surface. Both Fe35Mn and (Fe35Mn)5Ag alloys showed accelerated corrosion when compared to pure Fe based on potentiodynamic testing results, with FeMnAg exhibiting the highest corrosion rate in Ca(2+)-containing HBSS. The results indicate that in Ca(2+)-containing HBSS, the formation of a partially protective Ca/P layer decelerates the corrosion progress, whereas the Fe- and Mn-phosphates formed in Ca(2+)-free HBSS do not have the same effect. The Ca/P layer on (Fe35Mn)5Ag experienced a reduction in resistance following several hours of testing, indicating partial loss of its protective effect.
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spelling pubmed-83794812021-08-30 Biodegradation behaviour of Fe-based alloys in Hanks’ Balanced Salt Solutions: Part I. material characterisation and corrosion testing Tonna, Christabelle Wang, Cheng Mei, Di Lamaka, Sviatlana V. Zheludkevich, Mikhail L. Buhagiar, Joseph Bioact Mater Article Research on Fe-based biodegradable alloys for implant applications has increased considerably over the past decade. However, there is limited information on the influence of testing electrolytes on corrosion product formation and general corrosion progress. In this work, the effect of Hanks’ Balanced Salt Solution (HBSS) with or without Ca(2+) on the corrosion of Fe, Fe35Mn and (Fe35Mn)5Ag powder-processed coupons has been studied using potentiodynamic polarisation, Electrochemical Impedance Spectroscopy (EIS), and preliminary localised measurement of pH and dissolved oxygen concentration in close proximity to the metal surface. Both Fe35Mn and (Fe35Mn)5Ag alloys showed accelerated corrosion when compared to pure Fe based on potentiodynamic testing results, with FeMnAg exhibiting the highest corrosion rate in Ca(2+)-containing HBSS. The results indicate that in Ca(2+)-containing HBSS, the formation of a partially protective Ca/P layer decelerates the corrosion progress, whereas the Fe- and Mn-phosphates formed in Ca(2+)-free HBSS do not have the same effect. The Ca/P layer on (Fe35Mn)5Ag experienced a reduction in resistance following several hours of testing, indicating partial loss of its protective effect. KeAi Publishing 2021-06-20 /pmc/articles/PMC8379481/ /pubmed/34466743 http://dx.doi.org/10.1016/j.bioactmat.2021.05.048 Text en © 2021 The Authors https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Article
Tonna, Christabelle
Wang, Cheng
Mei, Di
Lamaka, Sviatlana V.
Zheludkevich, Mikhail L.
Buhagiar, Joseph
Biodegradation behaviour of Fe-based alloys in Hanks’ Balanced Salt Solutions: Part I. material characterisation and corrosion testing
title Biodegradation behaviour of Fe-based alloys in Hanks’ Balanced Salt Solutions: Part I. material characterisation and corrosion testing
title_full Biodegradation behaviour of Fe-based alloys in Hanks’ Balanced Salt Solutions: Part I. material characterisation and corrosion testing
title_fullStr Biodegradation behaviour of Fe-based alloys in Hanks’ Balanced Salt Solutions: Part I. material characterisation and corrosion testing
title_full_unstemmed Biodegradation behaviour of Fe-based alloys in Hanks’ Balanced Salt Solutions: Part I. material characterisation and corrosion testing
title_short Biodegradation behaviour of Fe-based alloys in Hanks’ Balanced Salt Solutions: Part I. material characterisation and corrosion testing
title_sort biodegradation behaviour of fe-based alloys in hanks’ balanced salt solutions: part i. material characterisation and corrosion testing
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8379481/
https://www.ncbi.nlm.nih.gov/pubmed/34466743
http://dx.doi.org/10.1016/j.bioactmat.2021.05.048
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