| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Nano and Micro Additive Manufacturing
|
| Presentation Title |
Direct 3D Printing of Multi-metal Components via Drop-on-demand Molten Metal Jetting |
| Author(s) |
Negar Gilani, Xiangyun Gao, Marco Simonelli, Mark East, Richard Hague |
| On-Site Speaker (Planned) |
Negar Gilani |
| Abstract Scope |
Molten Metal Jetting (MMJ) is an emerging Additive Manufacturing (AM) technique that melts bulk metals in crucibles to create molten droplets, which are deposited onto a moving substrate to form three-dimensional objects. These superheated droplets remelt previously deposited material, ensuring full consolidation. MetalJet, an in-house developed MMJ system used in this study, features dual printheads for multi-metal printing in a single operation. We demonstrate the system’s capability to print microdroplets of tin, indium, silver, and copper on ceramic, polymer, and metallic substrates. Our study highlights the critical role of substrate temperature in inter-droplet bonding. Electrical resistivity measurements revealed a low resistivity comparable to that of the bulk metal. Density, measured using X-Ray computed tomography, reached up to 99.73% with a tailored deposition strategy. Surface roughness, crucial for applications such as radio frequency devices, was as low as 4 µm. This novel technology offers sustainable routes for manufacturing intricate miniature components. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Electronic Materials, Characterization |