About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Symposium
|
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Presentation Title |
Exploring Effects of Part Geometry of PBF-LB Bismuth Telluride Parts with In-situ Process Monitoring |
Author(s) |
Clayton Perbix, Joy Gockel, Saniya LeBlanc, Joe Walker |
On-Site Speaker (Planned) |
Clayton Perbix |
Abstract Scope |
Bismuth Telluride (Bi2Te3) is an important material used in thermoelectric applications. However, the effect on microstructure and ultimately thermoelectric performance when it is additively manufactured using laser powder bed fusion (PBF-LB) is not fully understood. This study investigates the effect of various processing parameters and part geometries on the quality and microstructure of PBF-LB Bi2Te3. In-situ process monitoring was performed using thermal tomography to provide per-layer information about sample thermal behavior. Results showed that increasing part size led to undesirable printing defects, and individual parts also exhibited a large range of microstructural features. Thermal tomography data showed that larger layer cross-sections retained more heat during processing, a result contradictory to what has been shown in structural metals processing. Understanding the effects of part geometry on thermoelectric materials such as Bi2Te3 will provide the ability to create more complex geometries and enable higher performance thermoelectric devices. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |