| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Solid-state Processing and Manufacturing for Extreme Environment Applications: Integrating Insights and Innovations
|
| Presentation Title |
A Hybrid Additive and Field-Assisted Sintering Process for Novel Refractory Metal Compact Heat Exchanger Manufacturing |
| Author(s) |
Xinchang Zhang, Jorgen F. Rufner, Michael D. McMurtrey, Arin S. Preston, Stephen Raiman, Yanliang Zhang, Kaidong Song , Raymond Weitekamp |
| On-Site Speaker (Planned) |
Xinchang Zhang |
| Abstract Scope |
This study demonstrated a novel hybrid additive and electric field-assisted sintering (EFAS) technology to manufacture high-temperature compact heat exchangers (CHXs) from refractory alloys for use in harsh environments. This approach started with the development of Mo-based refractory alloys using EFAS for improved molten salt corrosion resistance and mechanical strength above 1000°C. The microstructural characteristics and mechanical properties of the Mo-based alloys were studied. In parallel with material development, an advanced manufacturing process integrating additive and EFAS was developed to enable refractory alloy CHX fabrication. The process employed extrusion printing and digital light projection to make sacrificial channels. The sacrificial channels were embedded in refractory metal powders and sintered using EFAS. After sintering, the embedded sacrificial channels were removed from the compacts using chemical approaches to form the CHX flow channels. The integrated additive and sintering technologies enabled the manufacturing of geometry tailorable and performance enhanced CHX for energy efficiency improvement. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Powder Materials, Process Technology |