Sm_2Co_(17)永磁材料力学各向异性机理分析  

Mechanism Analysis of the Mechanical Anisotropy in Sm_2Co_(17) Permanent Magnet Materials

作　　者：刘兴民[1] 郭永权[2] 李岫梅[2] 闫阿儒[1] 梁永新 荆计生 马跃华 李卫[2] 

机构地区：[1]中国科学院宁波材料技术与工程研究所,浙江宁波315201 [2]钢铁研究总院功能材料研究所,北京100081 [3]山西京宇磁性材料有限公司,山西阳泉045201

出　　处：《磁性材料及器件》2009年第6期22-23,39,共3页Journal of Magnetic Materials and Devices

基　　金：国家重点基础研究发展计划项目(2010CB934601)

摘　　要：烧结Sm2Co17型永磁材料以其优良的磁性能、良好的耐腐蚀性和温度稳定性得到广泛应用。但其脆性较大,不仅给机械加工带来困难,也限制了材料在一些领域的应用。从Sm2Co17永磁材料微观晶体结构入手,分析了Sm2Co17永磁材料力学特性各向异性的机理。研究表明,Fe、Cu和Zr等掺杂元素、界面效应以及主相晶体结构导致了Sm2Co17永磁材料力学性能的各向异性,其中主相晶体结构的特性对力学性能各向异性起关键作用。研究结果为改善2:17型钐钴永磁材料的力学特性提供了理论指导。Sm2CO17 type sintered permanent magnet material has been widely used for its excellent magnetic properties, good corrosion resistance and temperature stability. But its fragility, not only brings difficulty to its machining, but also limits the applications in some areas. The mechanism of mechanical anisotropy in Sm2COl7 permanent magnetic materials was analysed from its crystal structure. It shows that Fe, Cu and Zr doping elements, interface effect, and especially the crystal structure of main phase give rise to the anisotropy of mechanical properties. These research findings provide a theoretical guidance to the improvemeat of the mechanical properties of 2 ： 17- type SmCo permanent magnet.

关 键 词：Sm2Co17永磁材料 力学各向异性 晶体结构 

分 类 号：TM274[一般工业技术—材料科学与工程]