New Partially Water-Soluble Feedstocks for Additive Manufacturing of Ti6Al4V Parts by Material Extrusion
Eickhoff, Ralf 1; Antusch, Steffen 1; Nötzel, Dorit 1; Hanemann, Thomas
1
1 Institut für Angewandte Materialien – Werkstoffkunde (IAM-WK), Karlsruher Institut für Technologie (KIT)
11 Institut für Angewandte Materialien – Werkstoffkunde (IAM-WK), Karlsruher Institut für Technologie (KIT)
Abstract (englisch):
In this work, a process chain for the realization of dense Ti6Al4V parts via different material
extrusion methods will be introduced applying eco-friendly partially water-soluble binder systems.
In continuation of earlier research, polyethylene glycol (PEG) as a low molecular weight binder
component was combined either with poly(vinylbutyral) (PVB) or with poly(methylmethacrylat)
(PMMA) as a high molecular weight polymer and investigated with respect to their usability in FFF
and FFD. The additional investigation of different surfactants’ impact on the rheological behaviour
applying shear and oscillation rheology allowed for a final solid Ti6Al4V content of 60 vol%, which is
sufficient to achieve after printing, debinding and thermal densification parts with densities better
than 99% of the theoretical value. The requirements for usage in medical applications according to
ASTM F2885-17 can be fulfilled depending on the processing conditions.
extrusion methods will be introduced applying eco-friendly partially water-soluble binder systems.
In continuation of earlier research, polyethylene glycol (PEG) as a low molecular weight binder
component was combined either with poly(vinylbutyral) (PVB) or with poly(methylmethacrylat)
(PMMA) as a high molecular weight polymer and investigated with respect to their usability in FFF
and FFD. The additional investigation of different surfactants’ impact on the rheological behaviour
applying shear and oscillation rheology allowed for a final solid Ti6Al4V content of 60 vol%, which is
sufficient to achieve after printing, debinding and thermal densification parts with densities better
than 99% of the theoretical value. The requirements for usage in medical applications according to
ASTM F2885-17 can be fulfilled depending on the processing conditions.
| Zugehörige Institution(en) am KIT | Institut für Angewandte Materialien – Werkstoffkunde (IAM-WK) |
| Publikationstyp | Zeitschriftenaufsatz |
| Publikationsjahr | 2023 |
| Sprache | Englisch |
| Identifikator | ISSN: 1996-1944 KITopen-ID: 1000157913 |
| HGF-Programm | 43.34.01 (POF IV, LK 01) Lightweight Materials for Structural and Medical Application |
| Erschienen in | Materials |
| Verlag | MDPI |
| Band | 16 |
| Heft | 8 |
| Seiten | Art.-Nr.: 3162 |
| Bemerkung zur Veröffentlichung | Gefördert durch den KIT-Publikationsfonds |
| Vorab online veröffentlicht am | 17.04.2023 |
| Schlagwörter | material extrusion; FFF; FDM; FFD; additive manufacturing; titanium alloys; Ti6Al4V;, water-soluble binder; feedstock |
| Nachgewiesen in | Web of Science Dimensions Scopus |
| Globale Ziele für nachhaltige Entwicklung |