The temperature dependence of the anisotropic Nd-Fe-B fabricated by single-stage hot deformation

Anisotropic Nd-Fe-B magnets were fabricated by a single-stage hot deformation process. In this study, the temperature characteristics of the single-stage hot deformed Nd-Fe-B magnets were investigated. The temperature coefficient of Br is -0.12%/ deg. C, similar to those of isotropic MQPA powder, die-upset and sintered Nd-Fe-B magnets. The temperature coefficient of Hic is -0.72%/ deg. C, which is about twice as high as isotropic MQPA (-0.38%/ deg. C), and slightly higher than those of die-upset and sintered Nd-Fe-B magnets