3D-printed nanoporous ceramics: Tunable feedstock for direct ink write and projection microstereolithography

摘要: Abstract Porous ceramic materials have a wide range of potential applications for which controlling the structure across multiple length scales is desirable. Additive manufacturing (AM) porous ceramics therefore interest design flexibility. Here, ink compatible with 2 AM techniques, projection microstereolithography (PμSL) and direct write (DIW), was formulated demonstrated printed parts controllable feature sizes as well nanoporosity resulting from partial sintering. A diacrylate polymer mixed 3% yttria partially stabilized zirconia (3YZ) nanoparticles having different solids loadings to find formulations that meet printing requirements both techniques. Detailed rheological studies were used determine optimal use either method. The 3YZ structures DIW PμSL engineered macro cavities span lengths greater than several millimeters, wall thicknesses 200 540 μm, porosity within on order 100 nm. This study revealed through facile composition changes ink, it feasible same base techniques without need separate cumbersome development processes.