|About this Abstract
||MS&T21: Materials Science & Technology
||Additive Manufacturing of Ceramic-based Materials: Process Development, Materials, Process Optimization and Applications
||Characterization of Anisotropic Structure of Additive Manufactured Ceramics
||Rosario A. Gerhardt, Yifan Jin, Zev Greenberg, Shawn Allan
|On-Site Speaker (Planned)
||Rosario A. Gerhardt
Lithography-based ceramic manufacturing (LCM) was used to make 3YSZ and alumina parts in a Lithoz CeraFab 3D printer. In LCM, ceramic powders are suspended in a photocurable resin system, which is structured into a green part through repeated exposure to light which cures the resin. After the green part is produced, it is post processed to remove the resin binder and sinter the ceramics. Half of the samples were sintered to achieve a typical maximum density, and half were sintered at a lower temperature to leave approximately 20% porosity in the samples. AC electrical based methods (dielectric properties and impedance spectroscopy) were used to determine the structure-property-processing relationships aided by microscopy and CT scanning methods. It was found that the incompletely sintered specimens showed a much bigger dependence on humidity than those that were sintered to full density. The z-direction samples showed more insulating behavior than those in the xy-plane.