Material extrusion additive manufacturing of advanced ceramics: Towards the production of large components

Thermoplastic extrusion based additive manufacturing (MEX-AM), is a very interesting fabrication method for the shaping of larger ceramic parts. Commercial filaments are currently available in market, but due to lack information from suppliers, it not easy select suitable filament material 3D printing individual objects. In this study, three commercial yttria-stabilized zirconia (YSZ) provided by Fabru GmbH, SiCeram GmbH and PT+A were investigated. According our results, possible print YSZ with extremely different flexibility rheological properties. Compared other two filaments, resulted significantly higher flexibility, pressure through 0.25 mm nozzle was at 150 °C. Interestingly, filament, grain orientation effect could be observed. Based on STA analysis can assumed that polymer which decomposes high temperature already removed solvent debinding (SD). Finally, 70 tall cup structure including overhang features wall thicknesses used evaluate post-processing filaments.