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Layerwise slurry deposition of technical ceramics for additive manufacturing

  • The layerwise slurry deposition (LSD) is an innovative process for the deposition of layers in AM. In the LSD, a slurry with no or low organic content is repetitively spread as thin layers on each other by means of a doctor blade. During the deposition, the ceramic particles settle to form thin layers with a high packing density (55-60%). The LSD therefore shares aspects both of tape casting and slip casting. The LSD differentiates from the classical powder-based AM layer deposition, which typically are able to achieve only a low packing density (35-50%), consequently hindering the ability of sintering ceramic parts to full density. The LSD is coupled with the principles of selective laser sintering (SLS) or binder printing, to generate novel processes which take advantage of the possibility of achieving a highly dense powder-bed. This presentation will describe the most recent developments in the application of the LSD to technical ceramics, in particular Al2O3 and SiC, discussingThe layerwise slurry deposition (LSD) is an innovative process for the deposition of layers in AM. In the LSD, a slurry with no or low organic content is repetitively spread as thin layers on each other by means of a doctor blade. During the deposition, the ceramic particles settle to form thin layers with a high packing density (55-60%). The LSD therefore shares aspects both of tape casting and slip casting. The LSD differentiates from the classical powder-based AM layer deposition, which typically are able to achieve only a low packing density (35-50%), consequently hindering the ability of sintering ceramic parts to full density. The LSD is coupled with the principles of selective laser sintering (SLS) or binder printing, to generate novel processes which take advantage of the possibility of achieving a highly dense powder-bed. This presentation will describe the most recent developments in the application of the LSD to technical ceramics, in particular Al2O3 and SiC, discussing potential and issues connected to the layer deposition and the selective laser sintering of such layers.zeige mehrzeige weniger

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Metadaten
Autoren/innen:Andrea Zocca
Koautoren/innen:T. Mühler, Jens Günster
Dokumenttyp:Vortrag
Veröffentlichungsform:Präsentation
Sprache:Englisch
Jahr der Erstveröffentlichung:2016
Organisationseinheit der BAM:5 Werkstofftechnik
5 Werkstofftechnik / 5.4 Keramische Prozesstechnik und Biowerkstoffe
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten
Freie Schlagwörter:3D printing; Additive manufacturing; Layerwise slurry deposition
Themenfelder/Aktivitätsfelder der BAM:Material
Material / Materialien und Stoffe
Veranstaltung:Deutsche Keramische Gesellschaft Jahrestagung 2016
Veranstaltungsort:Freiberg, Germany
Beginndatum der Veranstaltung:7.03.2016
Enddatum der Veranstaltung:9.03.2016
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:28.09.2016
Referierte Publikation:Nein