纳米晶双相交换耦合永磁体(NdDy)_2(FeNb)_(14)B/α-Fe的制备、微结构及磁性能研究  

Preparation,Microstructure and Magnetic Properties of Nanocrystalline Two-Phase Enchange-Coupling Permanent Magnet (NdDy) 2(FeNb) 14 B/α-Fe

作　　者：杨仕清[1] 王豪才[1] 张万里[1] 龚捷[1] 何世光 

机构地区：[1]电子科技大学信息材料工程学院磁性工程系

出　　处：《稀土》1997年第5期38-40,50,共4页Chinese Rare Earths

基　　金：国防军事预研及其基金

摘　　要：利用熔体快淬工艺制备了成份为Ｎｄ８．１６Ｄｙ１Ｆｅ８５．２６Ｎｂ１Ｂ４．５８合金的条带，对由（ＮｄＤｙ）２（ＦｅＮｂ）１４Ｂ和α－Ｆｅ组成的两相快淬带进行了微结构分析与表征，探讨了晶化温度和退火时间及Ｄｙ、Ｎｂ元素的添加对稀土粘结永磁体磁性能的影响。The ribbons of Nd 8 16 Dy 1Fe 85 26 Nb 1B 4 58 alloy have been prepared by melt-spun overquenching.We have studied the crystal structure and microstructure of (NdDy) 2-(FeNb) 14 B based melt-spun ribbons consisting of a mixture of (NdDy) 2(FeNb) 14 B and α-Fe phases. The influence of annealling temperature,time and addition of Dy,Nb on the magnetic properties of exchannge-coupling bonded magnets has been also investigated.The bonded rare-earth permanent magnets with higher coercivity are obtained.

关 键 词：纳米 磁性材料 交换耦合 永磁体 稀土 

分 类 号：TM273[一般工业技术—材料科学与工程]