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http://dx.doi.org/10.18419/opus-12938
Autor(en): | Blum, M. Sayed, M. Mahmoud, E. M. Killinger, A. Gadow, R. Naga, S. M. |
Titel: | In vitro evaluation of biologically derived hydroxyapatite coatings manufactured by high velocity suspension spraying |
Erscheinungsdatum: | 2021 |
Dokumentart: | Zeitschriftenartikel |
Seiten: | 1891-1904 |
Erschienen in: | Journal of thermal spray technology 30 (2021), S. 1891-1904 |
URI: | http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-ds-129577 http://elib.uni-stuttgart.de/handle/11682/12957 http://dx.doi.org/10.18419/opus-12938 |
ISSN: | 1059-9630 1544-1016 |
Zusammenfassung: | This investigation aims to study a novel biologically derived coating applied on Ti alloy substrates. Obtained from a low-cost fish bone resource, a nanocrystalline hydroxyapatite has been synthesized and converted to an organic suspension. Coating was then manufactured by a high-velocity suspension flame spray process. The microstructure, phase composition, coating thickness, and roughness of hydroxyapatite (HA)-coated samples were studied. The results indicated the presence of both hydroxyapatite and β-tricalcium phosphate phases and the final coating layer was uniform and dense. In vitro bioactivity and biodegradability of the HA/Ti composite samples were estimated by immersion in simulated body fluid. Remarkable reductions in Ca2+ and PO43- ion concentrations were observed as well as low weight loss percentage and a slight variation in the pH value, indicating the generation of an apatite layer on the surface of all studied samples. Scanning electron microscopy, energy-dispersive x-ray analysis, and inductively coupled plasma–optical emission spectrometry confirm these results. Thus biological derived HA coatings are a promising candidate to enhance bioactivity and biodegradability of bone implants. To demonstrate feasibility on commercial medical components, a medical screw was coated and evaluated. |
Enthalten in den Sammlungen: | 07 Fakultät Konstruktions-, Produktions- und Fahrzeugtechnik |
Dateien zu dieser Ressource:
Datei | Beschreibung | Größe | Format | |
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s11666-021-01265-0.pdf | 1,68 MB | Adobe PDF | Öffnen/Anzeigen |
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