Increasing The Fine Particle Content In Metal Powders For LPBF Through Nanoparticle Dry-coating

Authors:

Eric Gärtner (Leibniz Institute for Materials Engineering – IWT, Germany),
Lutz Mädler (Leibniz Institute for Materials Engineering – IWT, Germany)

Abstract:

In powder-bed-based additive manufacturing (AM) processes, such as laser powder bed fusion (LPBF) typically the fine particles (<20 µm) are removed from metal powders in order to decrease powder cohesion that often results in inhomogeneous powder spreading. Nanoparticle dry-coating effectively reduces particle adhesion and allows for direct usage of the fine particles. A gas-atomized Cr25Co25Ni25Fe25 powder (99.9%. The utilized fine fraction increased the powder yield, clearly highlighting the potential of dry-coating for AM technologies.

DOI:

https://doi.org/10.59499/WP225371471