|About this Abstract
||MS&T21: Materials Science & Technology
||Additive Manufacturing of Ceramic-based Materials: Process Development, Materials, Process Optimization and Applications
||Binder-free Additive Manufacturing of Ceramics Using Hydrothermal-assisted Jet Fusion
||Fan Fei, Levi Kirby, Xuan Song
|On-Site Speaker (Planned)
Ceramic additive manufacturing (AM) provides a freeform fabrication method for creating complex ceramic structures that have been extremely difficult to build by traditional manufacturing processes. However, ceramic AM processes typically require a high organic binder content to bond ceramic particles into pre-sintered solids (i.e., green bodies), which results in undesired residue and reduced density yielding unreliable properties in final products. In this research, we present a new ceramic AM process, named hydrothermal-assisted jet fusion (HJF), which utilizes a water-mediated hydrothermal mechanism to fuse particles, eliminating the use of organic binders in forming green bodies. A prototype system for the proposed HJF process is introduced. The effects of process parameters (such as layer thickness, external pressures, temperature) on the properties of achieved green parts were investigated. Experimental results indicate that with optimized process parameters, HJF can achieve 3D ceramic green parts with a high density up to 90%.