• Holzer, Clemens
• Hampel, S.
• Cano, S.
• Müller-Köhn, A.
• Kukla, Christian
• Günther, A.
• Moritz, T.

Abstract

<p>Fused Filament Fabrication (FFF) is a type of material extrusion (ME) additive manufacturing and it is one of the most commonly used polymer-based additive manufacturing techniques. FFF could also be used to produce green parts with complex geometry out of feedstocks and after debinding and sintering a full metal or ceramic part is obtained. FFF offers the possibility of combining different materials. In polymers this is a relatively easy operation. But for the production of ceramic and/or metal parts consisting of different materials this is a challenging task. First the materials to be combined have to show a similar thermal expansion coefficient, then their powders have to sinter similarly and additionally both feedstocks have to be printable in the same machine and to show a comparable debinding behaviour. Here the complete processing route for the combined printing of filaments from steel and zirconia will be shown with emphasis on the required properties of the powders and the related feedstocks.</p>

Topics

• impedance spectroscopy
• polymer
• extrusion
• steel
• thermal expansion
• ceramic
• sintering
• field-flow fractionation
• material extrusion