Related Experiment Video
Updated: Dec 23, 2025
Laser Micromachining for Polymer Surface Topography Design
Published on: September 19, 2025
Additive Manufactured Polymer-Bonded Isotropic NdFeB Magnets by Stereolithography and Their Comparison to Fused
Christian Huber1,2, Gerald Mitteramskogler3, Michael Goertler4
1Physics of Functional Materials, University of Vienna, 1090 Vienna, Austria.
Abstract:
Magnetic isotropic NdFeB powder with a spherical morphology is used to 3D print magnets by stereolithography (SLA). Complex magnets with small feature sizes in a superior surface quality can be printed with SLA. The magnetic properties of the 3D printed bonded magnets are investigated and compared with magnets manufactured by fused filament fabrication (FFF), and selective laser sintering (SLS). All methods use the same hard magnetic isotropic NdFeB powder material. FFF and SLA use a polymer matrix material as binder, SLS sinters the powder directly. SLA can print magnets with a remanence of 388 mT and a coercivity of 0.923 T. A complex magnetic design for speed wheel sensing applications is presented and printed with all methods.
