About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of Ceramic-Based Materials: Process Development, Materials, Process Optimization and Applications
|
| Presentation Title |
Development of Direct Ink Write Radially Graded Alumina/Zirconia |
| Author(s) |
Benjamin Lamm, Beth Armstrong, Corson Cramer, Alex Rogers, Chanaka Kumar |
| On-Site Speaker (Planned) |
Benjamin Lamm |
| Abstract Scope |
Functionally graded materials (FGMs) using a compositional gradient are of interest to join dissimilar materials and optimize material properties spatially. This research focused on using zeta potential and dynamic light scattering to develop stable Al2O3, 8 wt.% yttria-stabilized ZrO2 (8YZ), and 50/50 Al2O3/8YZ slurries to direct ink write (DIW) a radially gradient alumina/zirconia disk as a model system for other applications, such as ceramic nuclear fuel pellets. Printed components were sintered to examine the efficacy of the methodology, and the resulting macro and microstructures were characterized. Material property differences resulted in cracking and disk failure despite a 50/50 Al2O3/8YZ intermedial layer. Component failure was attributed to grain growth of the 8YZ phase despite colloidal stability, due to differences in sintering onset temperature between the two phases.Funding for this work was provided by the US Department of Energy, National Nuclear Security Administration Office of Defense Nuclear Nonproliferation Research andDevelopment |