Title :
Recycle of Waste Nd–Fe–B Sintered Magnets via NdHx Nanoparticles Modification
Author :
Xiantao Li ; Ming Yue ; Weiqiang Liu ; Dongtao Zhang
Author_Institution :
Coll. of Mater. Sci. & Eng., Beijing Univ. of Technol., Beijing, China
Abstract :
The waste sintered Nd-Fe-B magnets were recycled to fabricate anisotropic bonded magnets by the combination of hydrogen decrepitation (HD) and NdHx nanoparticle modification. Magnetic properties of the recycled magnetic powders and bonded magnets were investigated. Adding NdHx nanoparticles to HD powders may increase the coercivity of the recycled powders. The HD powders with 10 wt. % NdHx degassed at 973 K for 5 h bear magnetic properties of Br of 9.36 kGs and Hci of 12.36 kOe. The recycled bonded magnet exhibits good magnetic properties of Br = 7.61 kGs, Hci = 12.93 kOe, and (BH)max = 11.56 MGOe.
Keywords :
boron alloys; coercive force; iron alloys; magnetic particles; nanoparticles; neodymium alloys; recycling; sintering; HD; NdHx nanoparticle modification; anisotropic bonded magnet; coercivity; hydrogen decrepitation; magnetic property; nanoparticles modification; recycled bonded magnet; recycled magnetic powder; recycled powder; sintered magnet; waste recycle; High definition video; Magnetic hysteresis; Magnetic properties; Perpendicular magnetic anisotropy; Powders; Recycling; Bonded magnets; NdHx nano-particles; NdHx nanoparticles; hydrogen decrepitation; hydrogen decrepitation (HD); recycle; waste Nd-Fe-B magnets; waste Nd???Fe???B magnets;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2015.2438073
