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dc.contributor.author
Omar, Sheila Ayelén
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dc.contributor.author
Ballarre, Josefina
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dc.contributor.author
Schreiner, Wido H.
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dc.contributor.author
Ceré, Silvia
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dc.date.available
2023-08-17T13:02:58Z
dc.date.issued
2022-04
dc.identifier.citation
Omar, Sheila Ayelén; Ballarre, Josefina; Schreiner, Wido H.; Ceré, Silvia; Micro Raman and XPS surface analysis to understand the electrochemical behaviour of AZ31 and AZ91 magnesium alloys as temporary implant materials; Elsevier; Materials Today Communications; 31; 4-2022; 1-11
dc.identifier.issn
2352-4928
dc.identifier.uri
http://hdl.handle.net/11336/208575
dc.description.abstract
Degradable metals and alloys have a potential use for surgical orthopedic applications. In this work, surface oxide/hydroxides formed by degradation, are evaluated in two commercial magnesium alloys (AZ31 and AZ91 alloys) by Raman, electrochemical and X-ray spectroscopic techniques. Electrochemical and surface/composition characterization of the AZ31 and AZ91 alloys are developed in contact with Hanks‘ Buffered Salts Solution (HBSS) at 37 °C. AZ31 alloy shows lower corrosion resistance than AZ91 in HBSS at 37 °C, both for short (24 h) and long (17 days) periods of immersion. The surface analysis demonstrate that on both alloys there are abundant corrosion products and the presence of compounds related to apatite. These results show that layers of magnesium oxide and hydroxide can be formed on the alloys surfaces, which gives them a certain degree of protection. The simulated body fluids contain different amounts of Ca2+ ions, carbonates / bicarbonates and phosphates, in addition to the Mg2+ ions (and other cations such as Al3+ and Zn2+) coming from the biomaterial corrosion environment. Thus, specific surface conditions can vary, such as the local pH value, and different corrosion products can precipitate which have different substrate protection properties. These corrosion products can slow down the degradation and influence the adsorption of proteins and cellular adhesion to the Mg surface by changing its chemistry and topography. The use of compositional (Raman and X-ray spectroscopies) and electrochemical (EIS and polarization curves) techniques, allows to do generate advances in the surface and degradation knowledge of typical Magnesium alloys like AZ31 and AZ91, for possible use as temporary implants. Even the analysis was carried out under static conditions, the systematic approach done is complete to picture the degradation mechanism of these alloys. Flow laboratory experiments are consider important to include as future work.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
AZ91 AND AZ31 ALLOYS
dc.subject
BIOMEDICAL MATERIALS
dc.subject
CORROSION BEHAVIOR
dc.subject
RAMAN SPECTROSCOPY
dc.subject
XPS
dc.subject.classification
Otras Ingeniería de los Materiales
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dc.subject.classification
Ingeniería de los Materiales
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dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
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dc.title
Micro Raman and XPS surface analysis to understand the electrochemical behaviour of AZ31 and AZ91 magnesium alloys as temporary implant materials
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-06-23T16:31:45Z
dc.journal.volume
31
dc.journal.pagination
1-11
dc.journal.pais
Países Bajos
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dc.description.fil
Fil: Omar, Sheila Ayelén. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
dc.description.fil
Fil: Ballarre, Josefina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
dc.description.fil
Fil: Schreiner, Wido H.. Universidade Federal do Paraná; Brasil
dc.description.fil
Fil: Ceré, Silvia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
dc.journal.title
Materials Today Communications
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S235249282200424X?via%3Dihub
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.mtcomm.2022.103557
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