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MA: Fachverband Magnetismus

MA 30: Bulk Materials: Soft and Hard Permanent Magnets

MA 30.1: Hauptvortrag

Mittwoch, 19. März 2025, 16:00–16:30, H18

Boosting Coercivity in Additively Manufactured Magnets Through Nano-Functionalization of NdFeB Powder — •Anna Ziefuss — Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg Essen, 45141 Essen, Germany

Permanent magnets are indispensable in the 21st century, powering applications in energy generation, transportation, and telecommunications. However, the high cost of rare-earth magnets, their supply, and availability represent critical factors, and novel technologies that avoid or minimize the use of such rare elements in permanent magnets need to be developed immediately. Additive manufacturing (AM) offers a promising solution by enabling complex structures with minimal material waste, reducing rare-earth usage. Yet, the successful printing of magnetic powders remains challenging, as printed magnets often exhibit brittleness and low magnetic properties. This contribution highlights how nanotechnology-driven innovations address limitations in additive manufacturing, unlocking the potential of printed magnets for sustainable, high-performance applications. Nano-functionalization emerges as a crucial approach to enhancing coercivity in additively manufactured magnets, emphasizing the importance of understanding the entire process chain - from nanoparticle production and feedstock modification to evaluating printed magnet properties.

Keywords: Powder bed fusion of metals; pemanent magnets; Nano-Functionalization; NdFeB Micropowder; Magnetic Property Improvement