| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Nano and Micro Additive Manufacturing
|
| Presentation Title |
F-64: Powder Flow Analysis of Copper Nanoporous Micron-sized Powders and Nanoparticles for 3D Printing of Hierarchical Electrodes |
| Author(s) |
Laura Duenas Gonzalez, Natalya Kublik, Aishwarya Thotta Jayachandran, Bruno Azeredo |
| On-Site Speaker (Planned) |
Laura Duenas Gonzalez |
| Abstract Scope |
Nanostructured metals have been a focus of interest for the scientific community due to their inherent size-dependent properties, such as high reactivity and surface area. In fact, nanoporous metal powders could potentially be used as feedstock in Laser Powder Bed Fusion (L-PBF) due to their enhanced optical properties enabled by their nano-ligaments, given that high reflectivity consists in one of the main drawbacks in metal L-PBF. However, since it is crucial to assure good dispersibility and uniformity for any L-PBF feedstock, this work presents a comprehensive analysis on flowability, spreadability, and homogeneity of chemically etched nano-porous copper (np-Cu) and np-Cu/Cu nanoparticles hybrid feedstocks, to ensure homogeneous voxels during prints at various volumetric energy densities. Preliminary data of single layer beds (90x90x0.05mm3) deposited by doctor blade method shows that spreadability is negatively affected by humidity and nanoparticle content. Near future work comprehends homogeneity analysis by optical micrographs and Hall flowability measurements. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Powder Materials, |