|About this Abstract
||Materials Science & Technology 2020
||Additive Manufacturing of Ceramic-based Materials: Process Development, Materials, Process Optimization and Applications
||Initiation of Selective Laser Flash Sintering in Yttria-Stabilized Zirconia
||Deborah Hagen, Joseph J Beaman, Desiderio Kovar
|On-Site Speaker (Planned)
The simultaneous application of uniform heating and a large electric field to flash sinter ceramics has been extensively studied in a furnace environment. More recently, selective laser flash sintering (SLFS) has been demonstrated. SLFS utilizes a laser that is scanned on the sample surface to rapidly heat a local area of a ceramic while applying an electric field between two electrodes. In this work, we investigate the initial stages of flash sintering using SLFS. We report on the initiation of electrical current flow through 8YSZ ceramic powder compacts using a carbon dioxide laser and a DC electric field. We evaluate parameters that affect the initiation of the flash event and their relationship to possible flash sintering mechanisms.