| 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 |
Enabling Multi-material LPBF Printing via Electrostatic Powder Spreading of Patterned Powder Beds |
| Author(s) |
Eric Elton, Michael Troksa, Ziheng Wu, Gabe Guss |
| On-Site Speaker (Planned) |
Eric Elton |
| Abstract Scope |
Laser powder bed fusion processes typically rely on mechanically spreading each powder layer with a spreader bar, limiting the ability to deposit multiple materials on one layer. While methods to deposit more than one powder per layer exist, they are complicated and time consuming. Here we use electrostatic powder spreading (ESPS) to deposit multiple metal powders on a single layer and build multi-material LPBF parts. ESPS uses the electric field between a powder reservoir and an electrode to move powder from the reservoir to the powder bed. By using an array of electrodes, powder can be selectively deposited in regions of the build area. We show that the applied voltage can be varied to affect the gradient between two materials, potentially leading to increased bonding between the materials. This suggests that ESPS can be used for multi-material LPBF parts with arbitrary 3-dimensional gradients. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |