Dresden 2026 – scientific programme
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MM: Fachverband Metall- und Materialphysik
MM 19: Poster Session
MM 19.48: Poster
Tuesday, March 10, 2026, 18:00–20:00, P5
In Situ Investigation of Phase Evolution During Oxidation and Reduction of Powder Bed Fusion Copper Powders — •Eric Schneider1, Lena Friedrich1, Jaqueline Savelkouls1, Fabienne Hellwig2, Milli Suchita Kujur2, Nick Hantke3, Arne Röttger2, Jan T. Sehrt3, and Christian Sternemann1 — 1Technische Universität Dortmund, Maria-Goeppert-Mayer-Str. 2, D-44227 Dortmund — 2Bergische Universität Wuppertal, Bahnhofstraße 15, D-42651Solingen — 3Ruhr-Universität Bochum, Universitätsstraße 150, D-44801 Bochum
The additive manufacturing (AM) process of laser-based powder bed fusion of metals (PBF-LB/M) enables the efficient production of complex components with internal cavities. Fabricating dense structures from pure copper remains challenging due to copper’s high thermal conductivity and its low absorption of infrared laser radiation. Targeted surface modification, such as oxidation or nickel coating, can enhance the processability and reusability of copper powders. This study examines the oxidation behavior of copper powder in air and its controlled reduction in an Ar/2%H2 atmosphere at temperatures up to 350 ∘C. X-ray diffraction measurements were conducted at the BL9 beamline of the DELTA synchrotron radiation source. The findings provide key insights into the evolution of copper powder surfaces under PBF-LB/M-relevant atmospheres and offer practical guidance for industrial copper powder processing. This research is funded by the DFG through projects 508745195, RO 4523/9-1, SE 2935/6-1, and STE 1079/9-1.
Keywords: PBF LBM; Copper; Reusebility; Additive Manufacturing; X-Ray diffraction