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Artículo

58S and 68S sol-gel glass-like bioactive coatings for enhancing the implant performance of AZ91D magnesium alloy

Omar, Sheila AyelénIcon ; Ballarre, JosefinaIcon ; Castro, Y.; Martinez Campos, E.; Schreiner, W.; Durán, A.; Ceré, SilviaIcon
Fecha de publicación: 10/2020
Editorial: Elsevier Science SA
Revista: Surface and Coatings Technology
ISSN: 0257-8972
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Recubrimientos y Películas; Físico-Química, Ciencia de los Polímeros, Electroquímica

Resumen

Magnesium alloys such as AZ91D, has been presented as potential material for temporary implant material since it has a mechanical performance suitable with bone tissue and also degrades in time. The fast degradation at early times of AZ91D alloy could be retarded applying bioactive sol-gel glass coatings. In this work, two compositions of known bioactive silica-glasses (58S and 68S) were synthetized by sol-gel method and deposited by dip coating to the magnesium substrates. The glasses were produced without using any nitrate precursor, avoiding the presence of remaining residual in the coatings that could be not beneficial to the body. The coatings presented an excellent bioactive response after immersion in Hanks' balanced salt solution (HBSS) at 37 °C, showing apatite related deposits after 72 h immersion detected by scanning electron microscopy, Raman spectroscopy and X-ray photoelectron spectroscopy. Corrosion behaviour has been also analyzed, 58S presented as better protective features after 17 days of immersion. Cell attachment and proliferation tests demonstrate that both 58S and 68S coatings on AZ91D magnesium alloy are suitable as temporary implant materials.
Palabras clave: BIOACTIVITY , CORROSION RETARDING , MAGNESIUM ALLOY , SOL GEL GLASS COATINGS
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/137876
DOI: http://dx.doi.org/10.1016/j.surfcoat.2020.126224
URL: https://www.sciencedirect.com/science/article/abs/pii/S0257897220308938?via%3Dih
Colecciones
Articulos(INTEMA)
Articulos de INST.DE INV.EN CIENCIA Y TECNOL.MATERIALES (I)
Citación
Omar, Sheila Ayelén; Ballarre, Josefina; Castro, Y.; Martinez Campos, E.; Schreiner, W.; et al.; 58S and 68S sol-gel glass-like bioactive coatings for enhancing the implant performance of AZ91D magnesium alloy; Elsevier Science SA; Surface and Coatings Technology; 400; 10-2020; 1-7
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