Nanocrystalline Nd₂Fe₁₄B/α-Fe permanent magnet

来源期刊：中国有色金属学报(英文版)2002年第4期

论文作者：倪建森 徐晖 朱明原 李强 周邦新 董远达

文章页码：723 - 725

Key words：Nd-Fe-B；permanent magnet；nanocrystalline；grain size

Abstract: Nd_8.5Fe₇₅Co₅Cu₁Zr₃Nb₁B_6.5 bonded magnet was prepared by melt-spinning (v_s=18m/s) and subsequent heat treatment (670℃, 4min). Excellent magnetic properties of the bonded magnet were achieved: B_r=0.68T, _iH_c=620.3kA/m, (BH)_max=74kJ/m³. The addition of Cu and Zr elements shows to be advantageous in improving an intrinsic coercivity and squareness of hysteresis loop, as well as energy product. It has a remarkable remanence enhancement and the isotropic saturation remanence ratio M_r/M_s is 0.83.