Additive manufacturing of geopolymers by local laser curing
- For the additive manufacturing of large components typically powder-based methods are used. A powder is deposited layer by layer by means of a recoater, then, the component structure is printed into each individual layer. We introduce here the new method of local laser drying, which is a suspension-based method specially developed for the manufacturing of large voluminous ceramic parts. The structure information is directly written into the freshly deposited layer of suspension by laser drying. Initially, the technology was developed for ceramic suspensions, however, first experiments with geopolymers reveal a high potential for this class of materials. Metakaolin, fly ash and lithium aluminate-based one-part geopolymers were used in first experiments. The local annealing of the geopolymer slurry results in a drying and crosslinking reaction and, thus, in a local consolidation of the material. First parts made are introduced and their properties are discussed.
Autor*innen: | Petr Hlavacek |
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Koautor*innen: | T. Mühler, Jörg Lüchtenborg, Patrick SturmORCiD, Gregor GluthORCiD, Hans-Carsten KühneORCiD, Jens GünsterORCiD |
Dokumenttyp: | Vortrag |
Veröffentlichungsform: | Präsentation |
Sprache: | Englisch |
Jahr der Erstveröffentlichung: | 2018 |
Organisationseinheit der BAM: | 5 Werkstofftechnik |
5 Werkstofftechnik / 5.4 Multimateriale Fertigungsprozesse | |
7 Bauwerkssicherheit | |
7 Bauwerkssicherheit / 7.4 Baustofftechnologie | |
DDC-Klassifikation: | Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurbau |
Freie Schlagwörter: | Additive manufacturing; Geopolymers; Laser curing |
Themenfelder/Aktivitätsfelder der BAM: | Infrastruktur |
Veranstaltung: | CIMTEC 2018 |
Veranstaltungsort: | Perugia, Italy |
Beginndatum der Veranstaltung: | 04.06.2018 |
Enddatum der Veranstaltung: | 08.06.2018 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 27.02.2019 |
Referierte Publikation: | Nein |
Eingeladener Vortrag: | Nein |