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.
出处
《磁性材料及器件》
CSCD
北大核心
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)
