Regensburg 2025 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 30: Bulk Materials: Soft and Hard Permanent Magnets

MA 30.7: Vortrag

Mittwoch, 19. März 2025, 17:45–18:00, H18

Laser powder bed fusion of hard magnetic composites — •Kilian Schäfer — Functional Materials, Institute of Material Science, Technical University of Darmstadt

Hard magnetic materials are essential for advancing carbon-neutral technologies and medical devices. While traditional manufacturing methods suit large, simple magnets, there is increasing demand for resource-efficient processes to create intricate small magnetic components. Additive manufacturing offers a promising solution, enabling the production of complex, tailored magnetic components with improved efficiency. This study explores composites made via laser powder bed fusion, combining hard magnetic powders with polyamide and thermoplastic polyurethanes. It examines how the magnetic powder*s fraction, morphology, and particle size impact performance. Results show that anisotropic magnetic properties can be achieved with specific powder particle shapes. Additionally, localized mechanical properties were achieved by adjusting laser parameters, enabling the production of magnetically controllable actuators for applications like biomedical devices. These findings provide guidelines for optimizing hard magnetic composite performance using laser powder bed fusion.

Keywords: Additive Manufacturing; Permanent Magnets; Biomedical Applications