Effect of ball milling and moderate surface oxidization on the microwave absorption properties of FeSiAl composites

2013 ◽  
Vol 178 (16) ◽  
pp. 1005-1011 ◽  
Author(s):  
Yongbao Feng ◽  
Chuanming Tang ◽  
Tai Qiu
Keyword(s):  
Ball Milling ◽  
Microwave Absorption ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Surface Oxidization

scholarly journals Microwave Absorption Properties of Magnetite Particles Extracted from Nickel Slag

Materials ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2162
Author(s):  
Pengze Yan ◽  
Yongqian Shen ◽  
Xueyan Du ◽  
Junkai Chong
Keyword(s):  
Electron Microscopy ◽  
Ball Milling ◽  
Microwave Absorption ◽  
Photoelectron Spectroscopy ◽  
Magnetic Loss ◽  
Interfacial Polarization ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
X Ray ◽  
Transmission Electron

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, magnetic properties, and microwave 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.

Microwave Absorption Properties of Iron Nanoparticles Prepared by Ball-Milling

2015 ◽  
Vol 45 (5) ◽  
pp. 2311-2315 ◽  
Author(s):  
Xuan T. A. Chu ◽  
Bach N. Ta ◽  
Le T. H. Ngo ◽  
Manh H. Do ◽  
Phuc X. Nguyen ◽  
...  
Keyword(s):  
Ball Milling ◽  
Microwave Absorption ◽  
Iron Nanoparticles ◽  
Absorption Properties ◽  
Microwave Absorption Properties

Preparation and Microwave Absorption Properties of LiZn Ferrite

2009 ◽  
Vol 25 (1) ◽  
pp. 73-76 ◽  
Author(s):  
Hong JIANG ◽  
Jia GUO ◽  
Lu ZHAO ◽  
Hong ZHU
Keyword(s):  
Microwave Absorption ◽  
Absorption Properties ◽  
Microwave Absorption Properties
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