|About this Abstract
|MS&T21: Materials Science & Technology
|Additive Manufacturing of Ceramic-based Materials: Process Development, Materials, Process Optimization and Applications
|Additive Manufacturing of Yttrium-stabilized Zirconia Architectures with Stretch-dominated Mechanical Properties
|Hunter Rauch, Kendall Knight, Huachen Cui, Jake Yoder, Xiaoyu Zheng, Hang Yu
|On-Site Speaker (Planned)
Cellular ceramic structures can sustain high loads before fracturing and dissipate substantial energy during post-fracture densification. Ceramic 3D printing via stereolithography can create arbitrary geometries at fine resolution, including cellular structures, but there are significant challenges associated with designing the ceramic resin. Zirconia has been successfully 3D printed, but there is a dearth of results supporting 3D printed cellular zirconia architectures in load bearing applications. Here, we design a zirconia resin for stereolithography to minimize viscosity and maximize green density, based on which hexagonal-cell honeycombs are printed. After sintering, we test the mechanical properties by out-of-plane ‘sandwich panel’ compression and find that the performance and failure behavior are limited by the geometry rather than any manufacturing defects, which would include interlaminar defects or porosity. This observation highlights the promise of the presented manufacturing routes for architectured zirconia, while also stressing the needs for rational architecture design of cellular ceramics.