SmCo5纳米粒子及其纳米复合材料的研究进展
Research Progress of SmCo5 Nanoparticles and Nanocomposites
陈文卓 1殷海荣 1马振辉 1郭宏伟1
作者信息
- 1. 陕西科技大学材料科学与工程学院,陕西西安710021
- 折叠
摘要
SmCo5稀土永磁材料在纳米级别时可以获得高的矫顽力和强烈的磁耦合特性,在超高密度磁记录材料、 高性能永磁材料和纳米复合材料等领域具有重要应用.然而,低的剩磁限制了SmCo5永磁材料的发展.软硬磁双相纳米复合材料的出现弥补了其低剩磁的不足,为高性能高使用温度永磁材料的发展提供了重要基础,在航空航天、 电动汽车以及风力发电等领域具有潜在的应用.采用物理法或化学法可以制备出SmCo5纳米粒子及其纳米复合粒子,这些方法具有各自的优点,也存在明显的不足.介绍了SmCo5纳米粒子的矫顽力机制和相应的制备方法(包括物理法和化学法),并对各方法的优缺点进行了总结和对比.同时,综述了SmCo基纳米复合粒子的交换耦合作用机制以及它们的研究现状;通过对三类模型进行分析,阐明了纳米复合材料所面临的问题,指出了未来纳米复合材料的研究方向.
Abstract
SmCo5 rare-earth permanent magnet at nanoscale can obtain high coercivity and strong exchange -coupling interactions , possessing important applications in high-density magnetic storage , high-performance magnets and nanocomposites .However, the low remanence limits the development of SmCo 5 .Hard/soft two-phase nanocomposites off set this deficiency and provide an important foun -dation for high performance and temperature magnets , which have promising applications in aerospace , motors and wind power genera-tion.SmCo5 nanoparticles and nanocomposites can be obtained by physical and chemical methods , which exhibit their advantages and disadvantages, respectively.In this review, the coercivity mechanism and prepared methods of SmCo 5 nanoparticles were summarized, and their advantages and disadvantages were depicted .The exchange-coupled mechanism and research progress of SmCo 5 nanocompos-ites were reviewed .By analyzing three structural models , the confronting problems to prepare SmCo 5 nanocomposites were shown , and future development trend was described .
关键词
SmCo5纳米粒子/纳米复合材料/矫顽力/交换耦合Key words
SmCo5 nanoparticles/nanocomposites/coercivity/exchange coupling引用本文复制引用
基金项目
国家自然科学基金(51472151)
国际科技合作计划项目(2009DFR50520)
陕西科技大学博士科研启动基金(2016BJ-71)
出版年
2018
NETL
NSTL
维普
万方数据