铝镍钴永磁材料的研究进展

doi:10.11896/cldb.23080088

材料导报

2024, Vol. 38

Issue (23): 23080088-10 https://doi.org/10.11896/cldb.23080088

金属与金属基复合材料

铝镍钴永磁材料的研究进展

刘悦卿^1,2,3, 赵江涛¹, 王凤青¹, 刘雷¹, 丁勇¹, 孙颖莉^1,*, 闫阿儒^1,2,3,*

1 中国科学院宁波材料技术与工程研究所稀土永磁联合创新中心,浙江宁波 315000
2 中国科学技术大学稀土学院,合肥 230000
3 中国科学院赣江创新研究院,江西赣州 341000

Research Progress in Alnico Permanent Magnetic Materials

LIU Yueqing^1,2,3, ZHAO Jiangtao¹, WANG Fengqing¹, LIU Lei¹, DING Yong¹, SUN Yingli^1,*, YAN Aru^1,2,3,*

1 CISRI & NIMTE Joint Innovation Center for Rare Earth Permanent Magnets, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, Zhejiang, China
2 School of Rare Earths, University of Science & Technology of China, Hefei 230026, China
3 Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, Jiangxi, China

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摘要铝镍钴永磁材料因具有较高剩磁和优异的温度稳定性,在航空航天用精密仪表中发挥重要作用。随着稀土资源危机的出现,铝镍钴作为无稀土永磁材料的代表再次成为国际永磁材料领域的研究热点。然而,铝镍钴永磁材料的实际纳米结构和反磁化行为与磁矩一致转动模型存在一定偏差,其矫顽力远低于理论极限,这阻碍了铝镍钴永磁材料的性能提升和应用发展。近年来,人们通过先进表征手段探究铝镍钴永磁材料的微观结构特征,并结合微磁学模拟研究磁性能的影响机制,为铝镍钴永磁材料的结构设计和性能提升提供指导,进而推动其工艺创新和应用突破。本工作综述了铝镍钴永磁材料在微观结构表征和磁性机理认识、矫顽力和温度稳定性优化提升以及新型制备技术探索等方面的研究进展,最后展望了铝镍钴永磁材料研究中尚未解决的问题和未来研究的发展方向。

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	刘悦卿
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	孙颖莉
	闫阿儒

关键词: 铝镍钴永磁材料调幅分解矫顽力温度稳定性

Abstract: Alnico permanent magnetic materials play an important role in precision instruments for aerospace applications due to their high remanence and excellent temperature stability. As a representative of rare-earth-free permanent magnets, Alnicomaterials have once again become one of the international research hotspots in the field of permanent magnet materials with the rare-earth resource crisis. However, the actual nanostructure and magnetization reversal of Alnico materials are different from the magnetic moment consistent rotation model. As a result, the coercivity of Alnico is much lower than the theoretical limit. It hinders the performance enhancement and application development of the Alnico materials. In recent years, the microstructures of Alnico magnets have been explored by advanced characterizations, and the influence mechanism of magnetic properties has been established by combining the micromagnetic simulation with the experimental results. It is favorable to the structural design, performance enhancement, and application breakthrough of Alnico materials. In this work, the research progress of Alnico materials in microstructure characterization and magnetic mechanism is introduced, the improvement of coercivity and temperature stability is overviewed, and the exploration of new preparation technology is summarized. Finally, the unresolved problems in the research of Alnico permanent magnetic materials and the future research development direction are prospected.

Key words: alnico permanent magnetic materials spinodal decomposition coercivity temperature stability

出版日期: 2024-12-10 发布日期: 2024-12-10

ZTFLH:

TM273

基金资助: 国家重点研发计划(2022YFB3807900)

通讯作者: * 孙颖莉,中国科学院宁波材料技术与工程研究所正高级工程师、硕士研究生导师。2006年毕业于国防科技大学材料物理与化学专业,2007年加入中科院宁波材料所工作至今,从事钴基金属永磁材料的微观结构、磁性能、服役特性以及在高技术领域工程化应用方面的研究。发表核心期刊文章18篇,申请发明专利17项,主持制定浙江团体标准1项,参与制定浙江团体标准1项、国家标准5项。先后主持了多项装备发展部、科工局、中科院等国家部委的高技术科技攻关项目。研究成果获得宁波市科技进步一等奖2项,院地合作优秀奖1项。yinglisun@nimte.ac.cn
闫阿儒,中国科学院宁波材料技术与工程研究所研究员、博士研究生导师。1993年毕业于西安理工大学;1998年毕业于西安交通大学,获博士学位。1998年至2000年在中国科学院物理研究所磁学国家重点实验室从事博士后研究,2000年至2005年在德国德累斯顿固体材料所做访问学者,2005年8月进入中国科学院宁波材料技术于工程研究所工作至今。长期从事稀土永磁材料的研究工作,主要包括高性能稀土永磁材料,资源节约型稀土永磁材料,热压/热变形稀土永磁材料,钐钴永磁材料等方向的研究。在Acta Materialia、Scripta Materialia、Applied Physics Letter等国际高水平杂志发表论文200余篇,授权发明专利40 余项,编著专著3部。先后担任国家重点研发计划、国家863重大项目、科技部国际合作重点项目、发改委磁性材料创新服务平台项目和工信部稀土专项等项目负责人。获得国家科技进步奖二等奖、稀土科学技术奖一等奖、宁波市科技进步一等奖2项、中国产学研合作创新成果奖、冶金科学技术奖一等奖等奖励。aruyan@nimte.ac.cn

作者简介: 刘悦卿,2020年6月于东北大学获得工学学士学位。现为中国科学技术大学稀土学院博士研究生,在闫阿儒研究员的指导下进行研究。目前主要研究领域为铝镍钴永磁材料。

引用本文:

刘悦卿, 赵江涛, 王凤青, 刘雷, 丁勇, 孙颖莉, 闫阿儒. 铝镍钴永磁材料的研究进展[J]. 材料导报, 2024, 38(23): 23080088-10.
LIU Yueqing, ZHAO Jiangtao, WANG Fengqing, LIU Lei, DING Yong, SUN Yingli, YAN Aru. Research Progress in Alnico Permanent Magnetic Materials. Materials Reports, 2024, 38(23): 23080088-10.

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http://www.mater-rep.com/CN/10.11896/cldb.23080088 或 http://www.mater-rep.com/CN/Y2024/V38/I23/23080088

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