| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Refractory Metals 2025
|
| Presentation Title |
Preparation of Spherical Tungsten Alloy Powder with Particle Atomic Layer Deposition |
| Author(s) |
Davis R. Conklin, Michael Zaza, Hailey Loehde-Woolard, Hermann F. Klein-Hessling Barrientos, Arne Croell, Jhonathan Rosales, Alan W. Weimer |
| On-Site Speaker (Planned) |
Davis R. Conklin |
| Abstract Scope |
Cracking is a key issue for additive manufacturing (AM) of tungsten. Alloying with other refractory metals can reduce cracking; however, due to limited availability of spherical powders, these additives are usually incorporated as fine, irregular particles that are not suitable for AM. This restricts printable alloy compositions, affects compositional uniformity, and prevents systematic evaluation of alloy effects on cracking. In this work, we employ particle atomic layer deposition (ALD) to prepare powders for AM by coating spherical tungsten powder with alloying elements. Particle ALD is a flexible and scalable process which deposits conformal coatings onto individual particles without causing agglomeration. AM-ready powders with many alloy compositions can be produced by coating widely available spherical tungsten powder. Particle ALD coatings also have intrinsically high yield and uniformity, which can reduce the cost of alloying elements. This technique will accelerate alloy design efforts to eliminate cracking in tungsten AM. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Powder Materials, High-Temperature Materials |