Microwave Absorbing Properties of Flaky Carbonyl Iron Powder Prepared by Rod Milling Method
Autor: | Jiangwei Chen, Peicheng Ji, Guozhi Xie, Ningyan Xie, Jing Chen, Jun Li |
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Rok vydání: | 2019 |
Předmět: |
010302 applied physics
Diffraction Permittivity Materials science Scanning electron microscope Reflection loss 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences Electronic Optical and Magnetic Materials symbols.namesake Carbonyl iron 0103 physical sciences Materials Chemistry symbols Electrical and Electronic Engineering Composite material 0210 nano-technology Raman spectroscopy Microwave |
Zdroj: | Journal of Electronic Materials. 48:2495-2500 |
ISSN: | 1543-186X 0361-5235 |
DOI: | 10.1007/s11664-019-06986-1 |
Popis: | The rod milling method of cylindrical-shaped milling medium was applied to prepare the flaky carbonyl iron powders with varying milling times (10 h, 15 h and 20 h). The sample obtained by the spherical milling medium was also used as a contrast. The samples were characterized by x-ray diffraction, scanning electron microscopy and Raman spectroscopy, respectively. The complex permittivity and permeability were measured by vector network analyzer in the frequency range of 1–18 GHz. The results revealed that cylinder-prepared samples have better impedance matching properties and good absorbing properties. The minimum reflection loss (RL) of − 15.7 dB was observed at 6.0 GHz with a thickness of 1.5 mm, and the effective absorption frequency (RL |
Databáze: | OpenAIRE |
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