Surface Characterization of AZ31 Alloy after Long-Term Immersion in Simulated Body Fluid-Reference-Cited by-同舟云学术

Surface Characterization of AZ31 Alloy after Long-Term Immersion in Simulated Body Fluid

Published:2023-12-15 Issue:12 Volume:13 Page:1692
ISSN:2073-4352
Container-title:Crystals
language:en
Short-container-title:Crystals

Author:

Pakhomova Ekaterina¹,Varone Alessandra²,Mezzi Alessio³^ORCID,Fava Alessandra⁴^ORCID,Manis Cristina⁵,Loy Francesco⁶^ORCID,Palombi Alessandra²,Cao Giacomo¹

Affiliation:

1. Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Via Marengo 2, 09123 Cagliari, CA, Italy

2. Department of Industrial Engineering, University of Rome “Tor Vergata”, Via del Politecnico 1, 00133 Rome, RM, Italy

3. ISMN-CNR, Strada Provinciale 35/d n. 9, 00010 Montelibretti, RM, Italy

4. ENEA, Department for Sustainability—Research Centre of Casaccia, Santa Maria di Galeria, 00123 Rome, RM, Italy

5. Department of Life and Environmental Sciences, University of Cagliari, Cittadella Universitaria, s.p. 8, 09042 Monserrato, CA, Italy

6. Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria, s.p. 8, 09042 Monserrato, CA, Italy

Abstract

The aim of the research campaign was to simulate in vitro the typical conditions for the corrosion in biofluid of a femoral bone implant manufactured with AZ31 alloy. The samples were immersed in biofluid (alpha-MEM) for time intervals of up to 56 days. For each immersion time, the chemical compositions and morphologies of the samples were studied with SEM, EDX, XRD, Raman spectroscopy, and XPS. The weight losses of the samples caused by corrosion were also measured. The results highlighted the formation of calcium phosphate crystals on the surface of the samples. This type of coating is well-known for its excellent corrosion resistance and for its ability to accelerate tissue regeneration. The deceleration of the corrosion process, observed after 28 days of immersion in biofluid, confirms the anti-corrosive effect of the coating that was spontaneously formed during the immersion tests.

Publisher

MDPI AG

Subject

Inorganic Chemistry,Condensed Matter Physics,General Materials Science,General Chemical Engineering

Link

https://www.mdpi.com/2073-4352/13/12/1692/pdf

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