Mn对FeCuSiBNb纳米晶合金的高频磁特性和微观结构的影响

doi:10.11930/j.issn.1004-9649.202005105

中国电力 ›› 2020, Vol. 53 ›› Issue (10): 42-49.DOI: 10.11930/j.issn.1004-9649.202005105

• 国家“十三五”智能电网重大专项专栏：（一）电工磁性材料及应用技术专栏 • 上一篇下一篇

Mn对FeCuSiBNb纳米晶合金的高频磁特性和微观结构的影响

张博峻¹, 肖恢芸^1,2, 贺爱娜^1,2, 黎嘉威^1,2, 董亚强^1,2

1. 中国科学院宁波材料技术与工程研究所，浙江宁波 315201;
2. 中国科学院大学，北京 100049

收稿日期:2020-05-14 修回日期:2020-09-11 发布日期:2020-10-05
作者简介:张博峻(1994—)，男，本科，科研助理，从事非晶纳米晶软磁材料研究，E-mail：zhangbojun@nimte.ac.cn;贺爱娜(1983—)，女，博士研究生，通信作者，高级工程师，从事非晶纳米晶软磁材料及应用技术研究，E-mail：hean@nimte.ac.cnE-mail:;董亚强(1985—)，男，博士，高级工程师，从事非晶纳米晶软磁复合材料的制备及应用研究，E-mail：dongyq@nimte.ac.cn
基金资助:
国家重点研发计划资助项目(2017YFB0903902)；国家自然科学基金资助项目(51801224，51771083)；浙江省自然科学基金资助项目(LQ18E010006)；宁波市“科技创新2025”重大专项(2018B10084)。

Effect of Mn on High Frequency Magnetic Properties and Microstructure of FeCuSiBNb Nanocrystalline Alloys

ZHANG Bojun¹, XIAO Huiyun^1,2, HE Aina^1,2, LI Jiawei^1,2, DONG Yaqiang^1,2

1. Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China

Received:2020-05-14 Revised:2020-09-11 Published:2020-10-05
Supported by:
This work is supported by National Key Research and Development Program of China (No.2017YFB0903902), National Natural Science Foundation of China (No.51801224, No.51771083), Zhejiang Provincial Natural Science Foundation (No.LQ18E010006), Ningbo Major Special Projects of the Plan "Science and Technology Innovation 2025" (No.2018B10084)

摘要/Abstract

摘要： 通过差示扫描量热仪（DSC）、X射线衍射仪（XRD）、透射电子显微镜（TEM）、磁光克尔显微镜（MOKE）、直流B-H仪和阻抗分析仪等手段研究了Mn元素对FeCuSiBNb合金的热稳定性、高频磁性能、微观结构和磁畴的影响。结果表明：Mn元素对合金的第一与第二晶化温度区间和矫顽力的影响非常小，但可提高合金的高频磁导率和适用退火温度区间。与无Mn合金相比，Mn掺杂合金在10 kHz下磁导率可提高36.5%，且可抑制Fe₃B相的析出。这种良好的高频特性可归因于Mn元素的掺杂降低了纳米晶合金的平均晶粒尺寸，改善了磁畴结构的均匀度，从而降低了钉扎场。

关键词: 纳米晶合金, 磁导率, 磁畴结构, 微观结构, 热稳定性

Abstract: The effects of Mn element on the thermal stability, high frequency magnetic permeability, microstructure and magnetic domain of FeCuSiBNb alloys were studied utilizing DSC, XRD, TEM, MOKE, DC B-H loop tracer and impedance analyzer. With the addition of a small amount of Mn, the temperature interval between the first and second crystallization temperatures and the coercivity of the alloys remain almost constant, but the high frequency permeability and the interval of annealing temperature improve significantly. Compared with Mn-free alloys, the permeability of Mn-doped alloys at 10 kHz is increased by 36.5%, and the precipitation of Fe₃B phase is suppressed. This good properties in the Mn-doped alloys can be attributed to the fact that Mn doping reduces the mean grain size, and thus it improves the uniformity of the magnetic domains, which decreases the pinning field of the nanocrystalline alloys.

Key words: nanocrystalline alloys, permeability, magnetic domain structure, microstructure, thermal stability

张博峻, 肖恢芸, 贺爱娜, 黎嘉威, 董亚强. Mn对FeCuSiBNb纳米晶合金的高频磁特性和微观结构的影响[J]. 中国电力, 2020, 53(10): 42-49.

ZHANG Bojun, XIAO Huiyun, HE Aina, LI Jiawei, DONG Yaqiang. Effect of Mn on High Frequency Magnetic Properties and Microstructure of FeCuSiBNb Nanocrystalline Alloys[J]. Electric Power, 2020, 53(10): 42-49.

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Mn对FeCuSiBNb纳米晶合金的高频磁特性和微观结构的影响

Effect of Mn on High Frequency Magnetic Properties and Microstructure of FeCuSiBNb Nanocrystalline Alloys

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Mn对FeCuSiBNb纳米晶合金的高频磁特性和微观结构的影响

Effect of Mn on High Frequency Magnetic Properties and Microstructure of FeCuSiBNb Nanocrystalline Alloys

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