Recycling of AM Scrap for Powder Production: Surface Characterization of 316L Stainless Steel Atomized with Argon and Nitrogen

Paper in proceeding, 2025

This study explores the sustainable production of 316L stainless steel powders using atomization with argon (Ar) and nitrogen (N2) gases. The powders were produced at Swerim's state-of-the-art VIGA unit, utilizing feedstock from additive manufacturing (AM) residual materials, including defective parts and support structures. By repurposing waste materials, the research aims to minimize the use of virgin raw materials and reduce the carbon footprint associated with powder production. The produced powders were characterized to evaluate their surface properties, including total oxygen content and surface chemistry, powder rheological properties and powder surface chemistry using XPS and HR SEM+EDX. The study examines the influence of atomization gases on powder quality and assesses their potential for reuse in AM processes. The results demonstrate the feasibility of producing high-quality powders from recycled materials, promoting circular economy principles and supporting the development of more sustainable manufacturing practices in the AM industry.