20.500.12556/DiRROS-21791 A rapid thermal-radiation-assisted sintering strategy for Nd-Fe-B-type magnets The green transition has spiked demand for high-performance sintered Nd-Fe-B permanent magnets, necessitating advanced powder consolidation technologies to enhance production efficiency. This study explores the rapid sintering methodology for an Nd-Fe-B powder using a radiation-assisted sintering approach. The case study material is an industrially used powder, prepared through strip-casting, hydrogen decrepitation, and jet milling, with a mean particle size of 5.5 µm. The powder is sintered to full density in a modified Spark Plasma Sintering furnace, achieving pressureless conditions and eliminating electrical currents in the sample to preserve grain alignment and prevent decomposition of the hard-magnetic phase. Fully-dense samples are obtained with heating rates ranging from 10 to 200 °C/min and up to 5 minutes of dwell time at 1100 °C. Rapid heating results in grain size and microstructure comparable to conventionally sintered magnets prepared from the same powder, without compromising magnetic performance after post-sinter annealing at 520 °C for 120 minutes. This sintering method contributes to a novel strategy for optimizing magnet production by utilizing efficient thermal-radiation heat transfer. The combination of rapid heating and pressureless sintering drastically reduces heat-up and dwell times, providing a fundamental advantage over slow conventional sintering. rapid sintering finite-element modeling true false true Wiley ZDA Angleški jezik Ni določen © 2024 The Author(s). Neznano 2025-03-28 13:09:19 2025-03-28 13:09:20 2025-10-24 03:49:50 0000-00-00 00:00:00 2024 0 0 Nasl. z nasl. zaslona; Soavtorji: Aljaž Ivekovič, Andraž Kocjan, Sašo Šturm, Kristina Žužek; Opis vira z dne 5. 9. 2024; str. 1-12 iss. 23, [article no.] 2401404 Vol. 26 Dec. 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2024-06-11 2024-08-23 2024-09-24 537 1527-2648 10.1002/adem.202401404 206480131 RAZ_Tomse_Tomaz_2024.pdf RAZ_Tomse_Tomaz_2024.pdf 1 93B126D1CB2ED198F5A55285BE662EE6 09d1b4eb77fe7a5397ded162b6b5c03079775ab1c625dd2f3f6829a3cc076a84 b6501818-0bce-11f0-963a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=31407 Institut Jožef Stefan 0 0 0