2:17型钐钴永磁材料的研究进展  

Research development of 2:17 type samarium-cobalt magnet

作　　者：闫阿儒[1] YAN Aru(Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,Zhejiang,China)

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

出　　处：《金属功能材料》2021年第1期1-11,共11页Metallic Functional Materials

基　　金：国家自然科学基金资助项目(51877094);浙江省重点研发计划项目(2021C01191);宁波市2025重大专项项目(20202037)。

摘　　要：2:17型钐钴永磁材料具有良好的磁性能和优异的温度稳定性,被广泛应用于航空航天、雷达通讯和石油化工等重要领域。随着5G通讯、轨道交通等新基建应用领域的拓展,2:17型钐钴永磁材料受到更广泛地关注和研究,近年来取得了显著的研究进展。在2:17型钐钴永磁胞状组织认识方面,提出基于纳米短程有序结构生长的胞状结构演变过程,揭示胞状结构形成过程中缺陷形成和分解机制。开发出纳米Cu及CuO掺杂的晶界重构技术,发展了稀土氧化物诱导的主相调控技术,实现磁体矫顽力的有效调控。通过晶界相、细晶强韧区域的构造,开发出强韧性2:17型钐钴磁体及其制备技术。组织认识的深化和新技术的开发,有望进一步挖掘2:17型钐钴永磁材料的性能潜力,对高端制造技术领域的发展发挥更好的支撑作用。2:17 type samarium-cobalt permanent magnetic materials have good magnetic properties and excellent temperature stability,which is widely used in aerospace,radar communication,petrochemical and other important fields.With the expansion of 5 G communication,rail transit and other new infrastructure applications,2:17 type samarium-cobalt permanent magnetic material has received more attention and research,and has made remarkable progress in recent years.In the recognition of microstructure in 2:17 type samarium cobalt permanent magnet,the evolution of cellular structure based on the growth of nano-short-range ordered structure was proposed,and the mechanism of defect formation and decomposition during cellular structure formation was revealed.To effective control of the coercivity of 2:17 type samarium-cobalt magnets,the technology of grain boundary reconstruction doped by nano Cu and CuO was developed,and the main phase regulation technology induced by rare earth oxide is developed.By constructing the structure of grain boundary phase and fine grain strong and tough region,the strong and tough 2:17 type samarium-cobalt magnet and its preparation technology have been developed.The deep understanding of microstructure evolution and the development of new technologies is expected to further explore the potential of 2:17 samarium cobalt permanent magnet,which will play a better supporting role in the development of high-end manufacturing technology.

关 键 词：2:17型钐钴 胞状组织 矫顽力 强韧性 

分 类 号：TM273[一般工业技术—材料科学与工程]