Microwave Conductivity of Fe and Mg Based Nanocomposites

Otmane, Fadhéla; Triaa, Salim; Azzaz, M.

doi:10.4028/www.scientific.net/jnanor.38.52

Cited by 2 publications

(2 citation statements)

References 5 publications

(5 reference statements)

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“…This leads to enhance the magnetic tangent tan𝛿𝛿 𝑀𝑀 spectra. In the low side of [8][9][10] GHz tan𝛿𝛿 𝑀𝑀 for both the samples are larger values which indicate significant magnetic losses.…”

Section: Morphology Characterizationmentioning

confidence: 92%

X-Band Electromagnetic Characterization of Fe72Al23V5 Based Nanocomposites

Otmane

Hamlati

Rekioua³

et al. 2020

DDF

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Determination of the electromagnetic parameters is an important tool to evaluate the microwave-absorbing characteristic of a novel material. In this context, our research was carried out to investigate the electromagnetic parameters of nanocomposites samples obtained by inclusion of nanostructured Fe72Al23V5 powders in a resin matrix. Nanostructured Fe72Al23V5 powders were synthesized by high-energy mechanical alloying (MA) route and characterized using a scanning electron microscopy (SEM). The nanostructured Fe72Al23V5 powders were dispersed in an epoxy resin matrix. Nanocomposites bulk samples of rectangular section and given thickness were shaped for electromagnetic characterization in an X-band metallic rectangular waveguide. Electromagnetic characterization was performed in terms of measured Sij scattering parameters. Dielectric permittivity and magnetic permeability spectra were extracted over the microwave X-band via the transmission/reflection technique. Obtained results exhibit how the nature and size of the inclusions affect the electromagnetic parameters in the X-band frequencies.

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Section: Morphology Characterizationmentioning

confidence: 92%

X-Band Electromagnetic Characterization of Fe72Al23V5 Based Nanocomposites

Otmane

Hamlati

Rekioua³

et al. 2020

DDF

Self Cite

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“…Sij scattering parameters measurement is a key step for an electromagnetic characterization. By electromagnetic characterization, we allude to the determination of certain electromagnetic parameters such as the loss factor and the dielectric permittivity of materials [8].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Fe-Based Nanocomposites

Otmane¹,

Triaa

Maali³

et al. 2019

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This study reports on the elaboration and characterization of bulk nanocomposites samples obtained by dispersion of metallic powders at the nanoscale as reinforcements in a polymer matrix. Elemental Fe powders were successfully nanostructured via high-energy ball milling. Structural characterization of the produced powders was conducted using X-Ray Diffraction (XRD) analysis and Scanning Electron Microscopy (SEM). The Halder-Wagner approach was adopted to determine the powder’s average grain size, internal strain, lattice parameters and the mixing factors. Structural parameters evolution and morphological changes according to milling progression are discussed. Bulk nanocomposites samples were shaped in a home moulder by dispersion of coarse Fe and nanostructured Fe powders in a continuous matrix of commercial epoxy resin. The obtained bulk samples match the metallic X-band wave-guide WR-90 dimensions used for electromagnetic characterization. The two-port Sij scattering parameters were measured via an Agilent 8791 ES network analyzer. The measured scattering parameters served to calculate the loss factor of samples and to extract the dielectric permittivity via the Nicholson-Ross-Weir conversion. Spectra evolution of the scattering parameters, the loss factor and the dielectric constant for epoxy resin with coarse Fe and nanostructured Fe reinforcements are commented.

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Microwave Conductivity of Fe and Mg Based Nanocomposites

Cited by 2 publications

References 5 publications

X-Band Electromagnetic Characterization of Fe<sub>72</sub>Al<sub>23</sub>V<sub>5</sub> Based Nanocomposites

X-Band Electromagnetic Characterization of Fe<sub>72</sub>Al<sub>23</sub>V<sub>5</sub> Based Nanocomposites

Synthesis and Characterization of Fe-Based Nanocomposites

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