About this Abstract |
| Meeting |
2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
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| Symposium
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2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
|
| Presentation Title |
Selective Laser Flash Sintering Using Scanning Fringing Field Electrodes in an Ionized Atmosphere |
| Author(s) |
Joey A. Zamora, Desiderio Kovar |
| On-Site Speaker (Planned) |
Joey A. Zamora |
| Abstract Scope |
Conventional fixed-electrode flash sintering configurations require voltages that scale with workpiece size and impose through-thickness current paths that limit processing to small geometries. This work introduces a scanning fringing electric field electrode architecture in which a pair of closely spaced electrodes are positioned above the ceramic surface and translated across the sample surface. The fringing electric field penetrates the near-surface region locally, confining the flash event to a discrete zone whose field strength is governed by the fixed inter-electrode gap. The electrode assembly can operate in an enclosed inert atmosphere at conditions sufficient to ionize the surrounding gas, enabling contactless current delivery though a plasma bridge. A laser beam directed into the inter-electrode gap provides spatially controlled thermal activation while temperature measurements are recorded by an on-axis photodiode and used to validate selective laser flash sintering within the fringing zone. |
| Proceedings Inclusion? |
Undecided |