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LAS glass-ceramic scaffolds by three-dimensional printing

  • Highly porous (>60% open porosity) glass–ceramic scaffolds with remarkable mechanical properties (compression strength of ~15 MPa) were produced by indirect 3D printing. Precursor glass powders were printed into 3D ordered structures and then heat treated to sinter and develop crystalline phases. The final glass–ceramic contained a β-spodumene solid solution together with a secondary phase of lithium disilicate. The precision of the printed geometry and the density of the struts in the scaffold depended on several processing parameters (e.g. powder size and flowability, layer thickness) and were improved by increasing the binder saturation and drying time. Two types of powders with different particle size distribution (PSD) and flowability were used. Powders with a larger PSD, could be processed within a wider range of printing parameters due to their good flowability; however, the printing precision and the struts density were lower compared to the scaffolds printed using the powderHighly porous (>60% open porosity) glass–ceramic scaffolds with remarkable mechanical properties (compression strength of ~15 MPa) were produced by indirect 3D printing. Precursor glass powders were printed into 3D ordered structures and then heat treated to sinter and develop crystalline phases. The final glass–ceramic contained a β-spodumene solid solution together with a secondary phase of lithium disilicate. The precision of the printed geometry and the density of the struts in the scaffold depended on several processing parameters (e.g. powder size and flowability, layer thickness) and were improved by increasing the binder saturation and drying time. Two types of powders with different particle size distribution (PSD) and flowability were used. Powders with a larger PSD, could be processed within a wider range of printing parameters due to their good flowability; however, the printing precision and the struts density were lower compared to the scaffolds printed using the powder in a smaller average PSD.zeige mehrzeige weniger

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Metadaten
Autoren/innen:Andrea Zocca, Cynthia Wirth, E. Bernardo, Ralf Müller, Jens Günster, P. Colombo
Dokumenttyp:Zeitschriftenartikel
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Journal of the European Ceramic Society
Jahr der Erstveröffentlichung:2013
Organisationseinheit der BAM:5 Werkstofftechnik
5 Werkstofftechnik / 5.4 Keramische Prozesstechnik und Biowerkstoffe
5 Werkstofftechnik / 5.6 Glas
Herausgeber (Institution):European Ceramic Society
Verlag:Elsevier
Verlagsort:Oxford
Jahrgang/Band:33
Ausgabe/Heft:9
Erste Seite:1525
Letzte Seite:1533
Freie Schlagwörter:Additive manufacturing; Glass ceramics; Porosity; Shaping; Strength
DOI:https://doi.org/10.1016/j.jeurceramsoc.2012.12.012
ISSN:0955-2219
ISSN:1873-619X
Bemerkung:
Geburtsname von Wirth, Cynthia: Gomes, C. M. -  Birth name of Wirth, Cynthia: Gomes, C. M.
Verfügbarkeit des Volltexts:Volltext-PDF im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:20.02.2016
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:02.05.2013