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Título: | Manufacturing of silicon – Bioactive glass scaffolds by selective laser melting for bone tissue engineering |
Autor: | Rodrigo-Vázquez, C. Sara; Kamboj, Nikhil; Aghayan, Marina; Sáez, Ada; Aza Moya, Antonio H. de CSIC ORCID; Rodríguez Barbero, Miguel Ángel CSIC ORCID; Hussainova, Irina | Palabras clave: | Selective laser melting Biomaterials Bioactive Glass Scaffolds Bones |
Fecha de publicación: | 10-ago-2020 | Editor: | Elsevier | Citación: | Ceramics International 46: 26936- 26944 (2020) | Resumen: | The irruption of additive manufacturing techniques opens the possibility to develop three-dimensional structures with complex geometries and high precision. In the current investigation a newly designed composite combining silicon (30, 40 and 50 wt%) with a bioactive glass and printed into scaffolds was obtained, using a direct selective laser melting (SLM) approach for the first time. Samples were computer-aided designed (CAD) to have cylindrical pores of 400 μm in diameter in order to be used as biomaterials for bone replacement. X – Ray diffraction was used to characterize the appearance of a new phase of pseudowollastonite precipitated by the partial devitrification of the glassy phase after the incidence of laser radiation. The mechanical behaviour of each composition was studied trough stress-strain curves, obtaining higher values of compressive strength as the silicon content increases. Scanning electron microscopy coupled to energy dispersive X – Ray spectroscopy (SEM-EDS) and Raman spectroscopy were used to study the bioactivity of each composite after soaking in the simulated body fluid (SBF) for 7 days, confirming this behaviour. | Versión del editor: | http://dx.doi.org/10.1016/j.ceramint.2020.07.171 | URI: | http://hdl.handle.net/10261/236568 | DOI: | 10.1016/j.ceramint.2020.07.171 | Identificadores: | doi: 10.1016/j.ceramint.2020.07.171 issn: 0272-8842 |
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