20.500.12556/RUL-153050 Additive-manufactured anisotropic magnets for harsh environments We describe the fabrication of SrFe$_{12}$O$_{19}$-based filaments, using polyphenylene sulphide (PPS) as the binder for the magnetic particles, and the subsequent printing of this filament with a 3D printer. PPS is an ideal polymer for applications in harsh environments, making it applicable for the automotive industry, where it is widely used with injection moulding. However, 3D printing this polymer introduces a major challenge. Because PPS is more difficult to extrude than polyamide, the filling factor in this study was set to 70 wt. %, which is lower than when used in injection moulding (close to 90 wt. %). The filament with a diameter of 2.75 mm was printed into a disk-shaped magnet with a diameter of 10 mm and a height of 4 mm using a HAGE 3D printer that uses a belt system for the filament extrusion. The magnets were printed onto a glass surface and onto a bulk Nd-Fe-B permanent magnet with an external magnetic field, parallel to the printer’s z-axis. Printing in the presence of a magnetic field was found to increase the magnet’s remanent magnetization by 61%, compared to an isotropic print. Without an external magnetic field we achieved a remanence of 23.9 emu/g for the 70 wt.% filling fraction, while when printing in a magnetic field, the value of the remanence improved to 39.7 emu/g because of the improved magnetic texture. SrFe$_{12}$O$_{19}$-based filaments magnetic particles polymers polyphenylene sulphide 3D printing magnetic field true false true Angleški jezik Ni določen Članek v reviji 2023-12-15 09:23:24 2023-12-15 09:23:24 2023-12-16 03:49:04 0000-00-00 00:00:00 2023 0 0 9 str. art. 171165 Vol. 586 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 537 0304-8853 10.1016/j.jmmm.2023.171165 162298115 1-s2.0-S0304885323008156-main.pdf 1-s2.0-S0304885323008156-main.pdf 1 8C988B4BB5FB553E7AF998644521CC44 d05add4de8abc945982bb5bb9acfb0613682dd7886da253fa2c59fa0aaab21a4 7c22e92f-9b23-11ee-bebf-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=178842 https://www.sciencedirect.com/science/article/pii/S0304885323008156 0 568601fb-9b23-11ee-bebf-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=178841 Fakulteta za strojništvo 0 0 0