English

应用科学学报 ›› 1999, Vol. 17 ›› Issue (4): 411-415.

• 论文 • 上一篇    下一篇

纳米晶交换耦合稀土永磁体制备及磁性能研究

杨仕清, 张万里, 龚捷, 彭斌, 王豪才   

  1. 电子科技大学
  • 收稿日期:1998-04-25 修回日期:1999-01-10 出版日期:1999-12-31 发布日期:1999-12-31
  • 基金资助:
    国防预研基金资助项目

Preparation and Magnetic Properties of Nanocrystalline Exchange-coupling Rare-earth Permanent Magnet

YANG SHIQING, ZHANG WANLI, GONG JIE, PENG BIN, WANG HAOCAI   

  1. Institute of Information Materials Engineering, University of Electronic Science and Technology of China, Chengdu 610054
  • Received:1998-04-25 Revised:1999-01-10 Online:1999-12-31 Published:1999-12-31

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84

被引次数

3

摘要： 利用熔体快淬工艺制备了成分为Nd8.16Dy1Fe85.26Nb1B4.58合金的非晶快淬条带,对非晶条带及其随后的晶化样品进行了微结构分析与表征,利用振动样品磁强计(VSM)对样品进行了磁性能及其随温度变化关系的测试,探讨了晶化温度和退火时间及Dy,Nb元素的添加对纳米稀土永磁体磁性能的影响,获得了居里温度和矫顽力较高且剩磁温度系数为正的纳米交换耦合永磁体.

关键词: 居里温度, 熔体快淬工艺, 磁性能, 纳米交换耦合永磁体

Abstract: The amorphous Nd8.16Dy1Fe85.26Nb1B4.58 ribbons have been fabricated by means of melt-spun over quenching.Microstructure investigation by XRD and TEM of the amorphous and crystal ribbons is reported.the magnetic properties and their dependence of temperature were determined using vibrating sample magnetometer (V SM). The influence of annealing temperature,time and addition of Dy,Nb on the magnetic properties of nanostracture rare-ear th permanent magnet has been also investigated. The nanostructure exchange-coupling permanent magnet with higher Curie temperatue and higher coercivity and positive remanence temperature coefficient have been obtained.

Key words: nanostructure exchange-coupling perm anent magnet, melt-spun over quenching, Curie temperature, magnetic properties