| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing:
Incorporating Breakthrough Functionalities for Building Large Scale Components
|
| Presentation Title |
Atomic Layer Deposition (ALD) for Nanoscale SiC AM Feedstock Improvement |
| Author(s) |
Chris Gump, Dane Lindblad, Guillermo Rojas, Casey Christopher, Joseph Gauspohl, Arrelaine Dameron |
| On-Site Speaker (Planned) |
Guillermo Rojas |
| Abstract Scope |
Forge Nano (FN) has used ALD to modify SiC AM feedstock surfaces. ALD uses self-limiting surface reactions to deposit nanoscale films onto surfaces with digital precision. Previously coated Ti64 and AlSi10Mg AM feedstocks demonstrated that ALD films increased feedstock oxidation resistance and flowability, and improved mechanical properties printed parts.
100 g batches of SiC were coated with SiO2 in FN’s research fluidized bed reactor (FBR). ICP and Leco C and O elemental analysis proved ineffective at characterizing the films, but FIB/STEM imaging and EDS elemental mapping showed uniformly coated particles, with film thickness scaling with the number of ALD cycles performed. The deposition process was scaled to 3 kg batches in FN’s pilot FBR. We expect this material to exhibit improved flowability, densification and mechanical properties in binder jet and other similar AM applications. Further scaling to 100-300 kg will be discussed in a variety of deposition tools. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Ceramics, High-Temperature Materials |