| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Open Loop Control of Selective Laser Flash Sintering of Ceramics |
| Author(s) |
David Khanan, Desiderio Kovar, Joseph Beaman |
| On-Site Speaker (Planned) |
David Khanan |
| Abstract Scope |
A goal for selective laser flash sintering (SLFS) is the production of ceramic parts with complex shapes and without the addition of a polymer binder to the powder. During the SLFS process, an electric field is passed through the build surface while a laser scans at high speeds to heat the powder. The combination of the large electric field and localized heating from the laser activates carriers in the scanned region and this produces current flow. The resulting Joule heating produces further heating of the powder that bonds the particles at the contact points. A variety of tests were conducted with a DC electric field that was actively controlled to determine conditions that produce localized flash sintering. The current across the sample was measured in situ and variable electric fields and laser parameters were tested. Experiments were also conducted with an AC electric field. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |