Study on the hydrogen damage of sintered NdFeB and the fabrication of protective Al coating

IF 3 3区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Magnetism and Magnetic Materials Pub Date : 2025-08-15 Epub Date: 2025-04-17 DOI:10.1016/j.jmmm.2025.173067
Falang Lin , Zexin Lu , Yingjie Ding , Jianjun Jiang , Bizhang Zheng , Lijing Yang , Anli Lin , Shengzhi Dong , Guangjian Peng , Zhenlun Song
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Abstract

This study focuses on the hydrogen damage process of sintered NdFeB magnets. A reactor was utilized to evaluate the hydrogen barrier performance of the coatings. The results indicate that bare magnets and normal Al coated magnets have almost no hydrogen resistance at 100°C. Al coating by a DC magnetron sputtering with IBAD (Ion Beam Assisted Deposition) was employed to enhance the resistance of the magnets in hydrogen environments. The IBAD (0.8A) Al coating has excellent hydrogen barrier performance, reaching 180 h at 200°C and 10 bar hydrogen.
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烧结钕铁硼氢损伤及防护Al涂层制备研究
研究了烧结钕铁硼磁体的氢损伤过程。利用反应器对涂层的隔氢性能进行了评价。结果表明,裸磁体和普通铝涂层磁体在100℃时几乎没有氢电阻。采用离子束辅助沉积(IBAD)的直流磁控溅射镀铝涂层来提高磁体在氢环境中的电阻。IBAD (0.8A) Al涂层具有优异的氢阻隔性能,在200℃、10 bar的条件下可达到180 h。
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来源期刊
Journal of Magnetism and Magnetic Materials
Journal of Magnetism and Magnetic Materials 物理-材料科学:综合
CiteScore
5.30
自引率
11.10%
发文量
1149
审稿时长
59 days
期刊介绍: The Journal of Magnetism and Magnetic Materials provides an important forum for the disclosure and discussion of original contributions covering the whole spectrum of topics, from basic magnetism to the technology and applications of magnetic materials. The journal encourages greater interaction between the basic and applied sub-disciplines of magnetism with comprehensive review articles, in addition to full-length contributions. In addition, other categories of contributions are welcome, including Critical Focused issues, Current Perspectives and Outreach to the General Public. Main Categories: Full-length articles: Technically original research documents that report results of value to the communities that comprise the journal audience. The link between chemical, structural and microstructural properties on the one hand and magnetic properties on the other hand are encouraged. In addition to general topics covering all areas of magnetism and magnetic materials, the full-length articles also include three sub-sections, focusing on Nanomagnetism, Spintronics and Applications. The sub-section on Nanomagnetism contains articles on magnetic nanoparticles, nanowires, thin films, 2D materials and other nanoscale magnetic materials and their applications. The sub-section on Spintronics contains articles on magnetoresistance, magnetoimpedance, magneto-optical phenomena, Micro-Electro-Mechanical Systems (MEMS), and other topics related to spin current control and magneto-transport phenomena. The sub-section on Applications display papers that focus on applications of magnetic materials. The applications need to show a connection to magnetism. Review articles: Review articles organize, clarify, and summarize existing major works in the areas covered by the Journal and provide comprehensive citations to the full spectrum of relevant literature.
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