【作者】 周桂琴； 惠英林； 连法增； 裴文利； 高强；

【Author】 Zhou Guiqin Hui Yinglin~+ Lian Fazeng Pei Wenli Gao Qiang~(++) (Department of Materials Science and Engineering,Northeastern University,Shenyang,110006,China) (+ Tianjin Lexi New Materials Corp,Tianjin,300457,China) (++ Shanghai Jiaotong University,Shanghai,200030,China)

【机构】 东北大学材料科学与工程系； 天津三环乐喜新材料有限公司； 上海交通大学复合材料研究所；

【摘要】 本文研究了Nd₉Fe₈₆B₅纳米晶复合磁体工艺结构与磁性。研究了快淬工艺对α-Fe/Nd₂Fe₁₄B型合金Nd₉Fe₈₆B₅结构与性能的影响,以及晶化温度和晶化时间对性能的影响。结果表明,类金属含量较少的Nd₉Fe₈₆B₅合金难于形成非晶,在辊速为19m/s时,快淬条带具有较好的纳米晶结构,并获得了较好磁性。辊速为25m/s快淬条带,经630℃×420s处理,获得较好磁性B_r=0.786T,_i H_c=338.5kA/m, （BH）_max=58.2kJ/m³。对应晶粒尺寸为D_α—Fe=24. 3nm,D_{（Nd）2Fe14B})=42.1nm。更多还原

【Abstract】 The technology,structures and magnetic properties of Nd₉Fe₈₆B₅ nanocrystalline composite magnets were investigated.The effect of quenching technology,crystallizing temperature and time on the structures and magnetic properties of Nd₉Fe₈₆B₅ quenched ribbon was studied.The results show that Nd₉Fe₈₆B₅ contained less analogue metals was difficult to form amorphous.The quenched ribbon of 19m/s roller rate had better nanocrystalline structures and better magnetic properties.The Magnetic properties of 25m/s quenched ribbon for 630℃×420s crystalline treatment reached _iH_c= 338.5kA/m,B_r=0.786T and（BH）_max= 58.2kJ/ m³.The grain size was D_α-Fe=24.3nm and D_Nd2Fe14B=42.1nm.更多还原