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 |
Photonic Curing of Chemically Bonded Phosphate Ceramics (CBPC) via Flash Lamp Annealing and the Effect of Optical Absorbers on the Reaction Kinetics and Microstructure |
| Author(s) |
Eren Ozmen, Mark D. Losego |
| On-Site Speaker (Planned) |
Eren Ozmen |
| Abstract Scope |
This study investigates a novel energy delivery method for additively manufacture ceramic materials: flash lamp annealing (FLA). FLA uses a xenon lamp that can deliver hundreds of J/cm2 of photonic energy in less than a second. Here we explore the importance of the aluminum dihydrogen phosphate binder (ADP) to-metal oxide ratio, and the addition of optical absorbing additives (Fe3O4 and graphite powders, black liquid dye) on the reaction kinetics and the microstructural formation in CBPC composite coatings of tens of micrometers in thickness. We demonstrate that an optimal ADP-to-metal oxide ratio exists for promoting cohesion without the fracture of the ceramic. Absorbers lower the required FLA energies to drive the ADP-to-AlPO4 reaction by >30%. We show for the first time the use of a molecular liquid dye absorber in such a ceramic system which mixes well and disrupts the microstructural development less than solid powder absorbers. |