from the conferences organized by TANGER Ltd.
Sintered Nd-Fe-B permanent magnets with a medium coercive force were fabricated using a strip-casting alloy prepared at the VSB-TU Ostrava. Powders prepared by hydrogen decrepitation and subsequent milling were compacted in a magnetic field and sintered at T = 1340 K (for 2 h). The sintered blanks were subjected to optimum heat treatment at 500 °C) for 2 h followed by quenching in gaseous nitrogen. Detailed studies of the microstructure, phase composition and magnetic properties of heat treated samples were performed. The composition and structure of samples were examined using X-ray diffraction (XRD) and scanning electron microscopy JEOL JSM-6610LV. Magnetic properties were measured using vibrating-sample magnetometer and hysteresisgraph AMT-4. The higher coercive force was reached after aging at 500 °C), which was performed after cooling from sintering temperature to room temperature
Keywords: Nd2Fe14B alloy, sintered magnets, heat treatment, coercive force© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.