抄録
Ceramic electrodes with dendritic lattice patterns were fabricated successfully by stereolithographic additive manufacturing
(STL-AM). Solid electrolytes of yttria and scandia stabilized zirconia(YSZ and SSZ)were selected to oxygen separation in
molten salt electrolysis for aluminum refining without carbon dioxide excretions. In the graphic design of dendrite patterns, the
cylinder lattices were connected at 4, 6, 8 and 12 in coordination numbers, and the aspect ratio were optimized to obtain maximal
specific surfaces. Spatial profiles of high temperature liquid propagations in dendritic patterns were visualized systematically by
computer fluid dynamics(CFD). The zirconia particles were dispersed into a photo sensitive resin to obtain the paste materials
for the STL process. An ultraviolet laser beam was scanned on the spread paste to create two-dimensional (2D)cross sections.
Through layer laminations and interlayer bonding, three-dimensional (3D)objects with dendritic structures could be fabricated. The
composite precursors were dewaxed and sintered in the air atmosphere to obtain fine ceramic microstructures.