Experimental investigation on surface finishing of CaF2 via core–shell composite magnetic particles

IF 2.5 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Magnetism and Magnetic Materials Pub Date : 2025-01-18 DOI:10.1016/j.jmmm.2025.172810

Shengjie Zhan , Jianbing Meng , Xiaojuan Dong , Youquan Tang , Ertuan Zhao , Zexu Zheng , Yuewu Gao

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引用次数: 0

Abstract

The surface precision of CaF₂ polished via magnetic abrasive finishing (MAF) mainly depend on the magnetic abrasive powder. A kind of core–shell structured magnetic abrasive with a hard Fe/Al intermetallic shell was prepared by in-situ alloy-hardening the surface of spherical carbonyl iron powders. The reaction temperature and time was proposed. The features of the prepared magnetic abrasive, including morphology, compositional and crystalline properties was characterized. The results of preparation and polishing experiments indicate that the prepared magnetic abrasive is composed of a carbonyl iron powder core and FeAl, Fe₃Al, Fe_0.4Al_0.6 metal compounds as the shell. The designed magnetic abrasive shows a good spherical shape and is coated with almost identical Fe/Al intermetallic compounds. The prepared magnetic abrasive achieved a refined roughness Ra to CaF₂ surface from initial 0.308 μm to 0.0246 μm, under the optimized combination of MAF process parameters.

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来源期刊

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.