|About this Abstract
|Materials Science & Technology 2020
|Additive Manufacturing: Alloy Design to Develop New Feedstock Materials
|Laser Additive Manufacturing of Nanocomposite Powders
|Bilal Gokce, Stephan Barcikowski
|On-Site Speaker (Planned)
During the past few years laser synthesis and processing of colloids (LSPC) has been established as an economically feasible synthesis method that addresses real-world problems. In this contribution, we show that by pH-controlled, colloidal adsorption of laser-generated nanoparticles on metal powders we are able to produce new composite materials that are highly relevant for powder-based 3D-printing methods such as laser powder bed fusion (LPBF). These composite powders contain a homogeneous distribution of nanoparticles on its surface. Due to the barrier-free surface of the small, highly dispersed colloidal nanoparticles, a high surface coverage can be achieved even with mass loadings of 0.1wt%, as will be shown for Y2O3 nanoparticles supported on steel powder that is used as feedstock for LPBF of ODS steels. Studies on L-PBF-built parts show that the homogeneity of the surface coverage can be transferred to the metal alloy part.