About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials for Energy Applications
|
| Presentation Title |
Development of Gas Atomization Processes for Production of Passivated Calcium Powders |
| Author(s) |
Jordan Tiarks, Dustin Hickman, Trevor Riedemann, Iver Anderson |
| On-Site Speaker (Planned) |
Jordan Tiarks |
| Abstract Scope |
Aluminum/calcium composite conductors for overhead power transmission have been demonstrated on a laboratory scale to have improved performance characteristics compared with traditional conductors. The availability of sufficient fine (<100 μm) calcium powders needed for production of these conductors as wound cable is a major hindrance to up-scale development and verification of this technology. Production of calcium powder is complicated due to its low density and heat capacity and inability to form a passivated oxide surface layer, leaving it vulnerable to reaction with moisture in the air. Atomization processing developments to produce passivated, high-yield calcium powders requires the development of a new high-efficiency free-fall gas atomization die and design of an in-situ fluorination-based passivation methodology requiring a detailed understanding of intra-chamber particle cooling and passivation kinetics. Progress on the demonstration of newly developed production methods for fine calcium powders will be reported. Support from US-DOE-OE through Ames lab contract DE-AC02-07CH11358. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Powder Materials, |