Microwave absorption properties of magnetite particles extracted from nickel slag | |
Yan, Pengze; Shen, Yongqian; Du, Xueyan; Chong, Junkai | |
刊名 | Materials |
2020-05-01 | |
卷号 | 13期号:9 |
关键词 | Crystals Dielectric losses Electric network analyzers Electromagnetic wave polarization Electromagnetic waves Enamels Field emission microscopes High resolution transmission electron microscopy Magnetic separation Magnetite Milling (machining) Morphology Nickel Scanning electron microscopy Slags X ray photoelectron spectroscopy Absorbing properties Absorption performance Field emission scanning electron microscopy Frequency band width Interfacial polarization Microwave absorption properties Vector network analysis Vibrating sample magnetometer |
DOI | 10.3390/ma13092162 |
英文摘要 | The utilization of nickel slag has attracted much attention due to its high-content of valuable elements. As a part of these efforts, this work focuses on whether magnetite crystals, obtained from nickel slag via molten oxidation, magnetic separation, and ball-milling can be used as a microwave absorber. The composition,morphology,microstructure,magneticproperties, andmicrowave absorption performance were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), vibrating sample magnetometer (VSM), and vector network analysis (VNA). The results reveal that the magnetite crystals exhibit excellent microwave absorption properties because of the synergistic action between dielectric loss and magnetic loss. The minimum reflection loss (RL) of the particles obtained after 6 h ball-milling reaches -34.0 dB at 16.72 GHz with thickness of 5 mm. The effective frequency bandwidth (RL ≤ -10 dB) is 4.8-5.4 GHz and 15.9-17.6 GHz. Interfacial polarization of the particles could play a crucial role in improving absorbing properties because several components contained in the particles can dissipate electromagnetic wave effectively. The current study could show great potential in the preparation of magnetite crystals and utilization of nickel slag. © 2020 by the authors. |
WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics |
语种 | 英语 |
出版者 | MDPI AG |
WOS记录号 | WOS:000535941100156 |
内容类型 | 期刊论文 |
源URL | [http://ir.lut.edu.cn/handle/2XXMBERH/115133] |
专题 | 材料科学与工程学院 研究生院 |
作者单位 | State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, Gansu; 730050, China |
推荐引用方式 GB/T 7714 | Yan, Pengze,Shen, Yongqian,Du, Xueyan,et al. Microwave absorption properties of magnetite particles extracted from nickel slag[J]. Materials,2020,13(9). |
APA | Yan, Pengze,Shen, Yongqian,Du, Xueyan,&Chong, Junkai.(2020).Microwave absorption properties of magnetite particles extracted from nickel slag.Materials,13(9). |
MLA | Yan, Pengze,et al."Microwave absorption properties of magnetite particles extracted from nickel slag".Materials 13.9(2020). |
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