| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Towards a Future of Sustainable Production and Processing of Metals and Alloys
|
| Presentation Title |
Metal Paste Deposition of Iron Parts from Iron Oxide (Fe3O4) Paste |
| Author(s) |
Sajad Shirzad, Dawood Al Nabhani, Krisanu Bandyopadhyay, Pravansu Mohanty, Christopher Pannier |
| On-Site Speaker (Planned) |
Sajad Shirzad |
| Abstract Scope |
This work extends the metal paste deposition process with an oxide feedstock to yield metal parts through a combined reduction and sintering furnace cycle. The paste is formulated from magnetite (Fe3O4) powder, polymer binder, graphite reducing agent, and water. The paste is then extruded by coordinated positive displacement pumping in a modified desktop Cartesian 3D printer, where it is deposited layer by layer onto a heated bed to create a green part in the desired shape with paste drying at each layer. A vacuum furnace is used for carbothermal reduction and sintering. The part shrinkage is more severe due to the removal of oxygen and carbon from the solid volume during reduction. Shrinkage and porosity of the cross sections of the beads after sintering for different sintering cycle are measured for varied furnace cycles to characterize the process and optimize sintering. This study points to a more sustainable route for iron production |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Powder Materials, Iron and Steel |