| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials for Energy Applications
|
| Presentation Title |
Conformal Coating of Powders by Physical Vapor Deposition |
| Author(s) |
Jonathan L. Priedeman, Gregory B. Thompson |
| On-Site Speaker (Planned) |
Jonathan L. Priedeman |
| Abstract Scope |
Many powder based applications can be enhanced through the creation of a core shell structure. These applications include nuclear fuel elements, galvanic electrolyte cells, and even stabilized nanocrystalline alloys. The challenge resides in the ability to provide a uniform coating over the entirety of a spherical surface (powder). In this presentation, the ability to yield a fluidized bed of powder in a vacuum is discussed such that conventional two-dimensional physical vapor deposition can now provide coatings over a three-dimensional powder shape. In our approach, the powder agitation is provided by a piston-crank mechanism. Equations relating the dynamics, forces, and stresses of the system are developed and described in terms of scalability for the process. Examples of the coating technology is addressed with reference to coatings powders for nanocrystalline stabilized alloys. |
| Proceedings Inclusion? |
Planned: |