Nanocrystalline Nd2Fe14B/α-Fepermanent magnet|NI Jian-sen(倪建森), XU Hui(徐晖),ZHU Ming-yuan(朱明原),LI Qiang(李强),ZHOU Bang-xin(周邦新),DONG Yuanda(董远达)-《中国有色金属学报》官方网站|全网首发|论文开放获取

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 12 No. 4 August 2002

Nanocrystalline Nd₂Fe₁₄B/α-Fe
permanent magnet

NI Jian-sen(倪建森), XU Hui(徐晖)，ZHU Ming-yuan(朱明原),
LI Qiang(李强)，ZHOU Bang-xin(周邦新)，DONG Yuanda(董远达)

（Institute of Materials Science and Engineering, Shanghai University,
Shanghai 200072, China）

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.

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

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW