Coercivity enhancement of hot-deformed Nd-Fe-B magnets by the eutectic grain boundary diffusion process using Nd64Fe12Ga20Cu4 alloy
2017年 秋期(第161回)講演大会
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 using Nd-Fe-Ga-Cu alloy as the diffusion source, was applied to the hot-deformed Nd-Fe-B magnets. In this work, Nd-Ga-Cu and Nd-Fe-Ga-Cu diffusion-processed samples showed same coercivity of 2.2 T, while Nd-Fe-Ga-Cu diffusion-processed sample possessed higher degree of texture, thus a higher remanence. The mechanism of coercivity enhancement was addressed in this talk with detailed SEM and TEM characterizations.
