Influence of the Infill Orientation on the Properties of Zirconia Parts Produced by Fused Filament Fabrication

Materials
Santiago CanoJoamin Gonzalez-Gutierrez

Abstract

The fused filament fabrication (FFF) of ceramics enables the additive manufacturing of components with complex geometries for many applications like tooling or prototyping. Nevertheless, due to the many factors involved in the process, it is difficult to separate the effect of the different parameters on the final properties of the FFF parts, which hinders the expansion of the technology. In this paper, the effect of the fill pattern used during FFF on the defects and the mechanical properties of zirconia components is evaluated. The zirconia-filled filaments were produced from scratch, characterized by different methods and used in the FFF of bending bars with infill orientations of 0°, ±45° and 90° with respect to the longest dimension of the specimens. Three-point bending tests were conducted on the specimens with the side in contact with the build platform under tensile loads. Next, the defects were identified with cuts in different sections. During the shaping by FFF, pores appeared inside the extruded roads due to binder degradation and or moisture evaporation. The changes in the fill pattern resulted in different types of porosity and defects in the first layer, with the latter leading to earlier fracture of the componen...Continue Reading

References

Jun 23, 2000·Dental Materials : Official Publication of the Academy of Dental Materials·T KosmacL Marion
Apr 5, 2018·Pharmaceutics·Evert FuenmayorIan Major
Aug 22, 2018·Materials·Dorit NötzelThomas Hanemann
Jan 29, 2019·Journal of Visualized Experiments : JoVE·Johannes AbelTassilo Moritz

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