Fused deposition modeling of mullite structures from a preceramic polymer and γ-alumina

Thermoplastic filaments for Fused Deposition Modeling fabrication of mullite ceramic components were produced from a polymethylsiloxane ceramic precursor, γ-Al2O3 powder and ethylene vinyl acetate (EVA) as an organic, elastomeric binder. Two micron-sized γ-Al2O3 powders with different particle size distributions were used. Both type of powders could be successfully 3D printed, however γ-Al2O3 with finer particle size resulted in better quality...