| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
A Career in Powder Processing and Additive Manufacturing: A MPMD Symposium Honoring David Bourell
|
| Presentation Title |
From Binder Jet Printing to Sintering of Fully-Dense, Controlled-Irregular Copper Powder |
| Author(s) |
Mahsa Beyk Khorasani, Markus Chmielus, John Barnes |
| On-Site Speaker (Planned) |
Mahsa Beyk Khorasani |
| Abstract Scope |
Achieving high green density using water-atomized powder has proven difficult when it comes to additive manufacturing of metal parts primarily due to its particles’ uncontrolled, irregular shape and contamination which introduces considerable porosity within the final sample.
These concerns are more crucial in binder jet printing (BJP), where the absence of a heat source for particle melting complicates the consolidation process compared to energy-beam-based methods. As a result, the focus on powder morphology becomes pivotal in BJP considering spreadability, density of green and sintered parts and surface quality.
This study investigates BJP of a newly developed copper powder with controlled irregular shape and full density, derived from CNC-cut copper rods with a relative apparent and tap density of 34.8% and 46%, respectively.
Green density measurement of binder jet printed samples indicated 39-40% in solid geometries and 42-43% in shelled geometries after BJP. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Process Technology, Powder Materials |