高温稳定、高磁性能2：17型SmCo永磁体绝缘特性的研究  

Analysis of electrical insulation on 2∶17 type SmCo magnets with high-temperature stabilization and high magnetic properties

作　　者：常颖[1] 李卫[2] 喻晓军[2] 朱明刚[2] 潘伟[2] 

机构地区：[1]大连理工大学三束材料改性国家重点实验室,材料科学与工程学院,辽宁大连116024 [2]北京钢铁研究总院,北京100081

出　　处：《功能材料》2008年第6期899-901,904,共4页Journal of Functional Materials

基　　金：国家博士后科学基金资助项目(3002-082005);辽宁省自然科学基金资助项目(20071090)

摘　　要：解释了2：17型SmCo永磁合金晶胞结构对磁体绝缘特性的影响，并通过对磁粉绝缘包覆到磁体整体表面喷涂的全方位电绝缘保护的方案设计，得出制备具有高温稳定性能、优良电绝缘特性、较高磁性能2：17型SmCo稀土永磁体的有效途径。制备的磁体电阻率比烧结磁体高10^6～10^7倍，比粘结稀土永磁高10^3～10^4倍，磁性能比永磁铁氧体高出近1倍。In the present work, as far as 2 ： 17 type SmCo magnets are concerned, the relationship between microstructure and electrical insulation were analyzed. By surrounding tiny magnetic powders with macromolecules and spray-painting the whole magnets, Sm2Co17 type magnets with excellent high-temperature stabilization, electrical insulation and high magnetic properties were produced, its resistance ρ is higher 106-101 than sintered magnets＇, and higher 10^3-10^4 than bonded magnets＇, in additional, its magnetic properties are higher one double than ferrite magnets.

关 键 词：2:17型SmCo 稀土永磁 电绝缘 涡流 

分 类 号：TM273[一般工业技术—材料科学与工程] TG132.2[电气工程—电工理论与新技术]