Coercivity enhancement of hot-deformed Nd-Fe-B magnets by the eutectic grain boundary diffusion process using Nd64Fe12Ga20Cu4 alloy
62nd Annual Conference on Magnetism and Magnetic Materials
LIU Lihua(NIMS), Sepehri Amin Hossein(NIMS), SASAKI Taisuke(NIMS), OHKUBO Tadakatsu(NIMS), YANO Masao(Toyota), SAKUMA Noritsugu(Toyota), KATO Akira(Toyota), SHOJI Tetsuya(Toyota), HONO Kazuhiro(NIMS)
Abstract
The eutectic grain boundary diffusion process was applied to the hot-deformed Nd-Fe-B magnets using Nd-Fe-Ga-Cu alloy as the diffusion source. In this work, Nd-Fe-Ga-Cu and Nd-Ga-Cu diffusion-processed samples showed the same coercivity of 2.2 T, while Nd-Fe-Ga-Cu diffusion-processed sample demonstrated a higher degree of texture, thus a higher remanence too. In this talk, the mechanism of coercivity enhancement was addressed through detailed SEM/TEM characterizations.
