Preparation and Microwave Electromagnetic Properties of Cross-shaped SiC Fibers

Liu, Xuguang; Wang, Kunjie; Wang, Lei; Jin-gen, Xue; Lan, Xinyan

doi:10.3724/sp.j.1077.2010.00441

Cited by 16 publications

(5 citation statements)

References 10 publications

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“…Adding other conductive materials can compensate for the lack of performance in SiC absorbing materials. Liu et al 22 reported the microwave absorption properties of SiC nanowire composites. The results show the material reached its RL minimum of −28 dB at 12 GHz with a layer thickness of 2.7 mm.…”

Section: Introductionmentioning

confidence: 99%

SiC Nanowire Mesh in High-Porosity Silicon Foam for Enhanced Electromagnetic Wave Absorption

Yang

Zhang

Wang

et al. 2022

ACS Appl. Nano Mater.

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The growth of SiC nanowires (SiCNWs) plays a vital role that determines the microstructure and the dielectric and absorption properties. With SiCNW growth, regulating the growth space and atmosphere of the nanowire is an important method to determine its performance. In this article, we propose a novel approach to control the microstructure of SiCNWs. The SiC precursor prepares the high-porosity foams based on a particle-stablized foaming process. The growth and microstructure of SiCNWs are adjusted by controlling porosity and reaction conditions. Adjusting the foam porosity indirectly coordinates the atmosphere of individual pores and the growth space of the SiCNW mesh. Foam pore structure density and the reactive sintering temperature enable control over SiCNW mesh growth composition. The influence of the microstructure on dielectric and absorption properties of nanowires was studied. The SiCNW mesh composites exhibit a favorable electromagnetic absorption performance, and the minimum reflection loss (RL) is −19.1 dB. The effective bandwidth (RL < −5 dB) of the SiCNW mesh in the thickness range of 2.40–2.58 mm can cover the whole X-band. This provides a potential new direction in the investigation of absorption materials.

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Section: Introductionmentioning

confidence: 99%

SiC Nanowire Mesh in High-Porosity Silicon Foam for Enhanced Electromagnetic Wave Absorption

Yang

Zhang

Wang

et al. 2022

ACS Appl. Nano Mater.

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“…Liu et al . 14 prepared a SiC fiber/paraffin wax composite with microwave absorption properties. Its minimum reflection loss ( RL ) was −28.47 dB at 12 GHz.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Wave Absorption and Mechanical Properties of Cobalt Sulfide/PVDF Composite Materials

Wang

et al. 2019

Sci Rep

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A cobalt sulfide/PVDF(Polyvinylidene Fluoride) composite was prepared by a simple blending method, and the microstructure of the composite was investigated through X-ray diffraction, scanning electron microscopy, and field emission scanning electron microscopy. Increased absorption properties at frequencies ranging from 2 GHz to 18 GHz were studied, and the mechanical properties were investigated via tensile tests and finite element method simulations. The results indicated that the cobalt sulfide/PVDF composites exhibited strong microwave absorption intensities (−43 dB at 6.6 GHz) with a low filler loading (5.0 wt%). The elastic modulus increased with the cobalt sulfide mass fraction. Cobalt sulfide could improve the mechanical properties of the composite, especially in the lengthwise direction.

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“…The absorbed microwave leads to induce heat in the SiC fiber due to the eddy current, which can produce the heat by electric resistance. 13,14) However, the eddy current flows partially in SiC fiber filament; it causes unstable heating behavior, and partial heat emitting should appear from SiC fiber filament. Thus, mat type of SiC was prepared and used to absorb microwave, homogeneously.…”

Section: Introductionmentioning

confidence: 99%

Heating Behavior of Silicon Carbide Fiber Mat under Microwave

Khishigbayar

Seo

Cho

2016

J. Korean Ceram. Soc

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A small diameter of SiC fiber mat can produce much higher heat under microwave irradiation than the other types of SiC materials. Fabrication of high strength SiC fiber consists of iodine vapor curing on polycarbosilane precursor and heat treatment process. The curing stage of polycarbosilane fiber was maintained at 150-200 o C in a vacuum condition under the iodine vapor to fabricate a high thermal radiation SiC fiber. The structure and morphology of the fibers were characterized by Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TG) and scanning electron microscopy (SEM). In this study, the thermal properties of SiC fiber mats under microwave have been analyzed with an IR thermal camera and its image analyzer. The prepared SiC fiber mats radiated high temperature with extremely high heating rate up to 1100 o C in 30 seconds. The fabricated SiC fiber mats were not oxidized after the heat radiation process under the microwave irradiation.

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Preparation and Microwave Electromagnetic Properties of Cross-shaped SiC Fibers

Cited by 16 publications

References 10 publications

SiC Nanowire Mesh in High-Porosity Silicon Foam for Enhanced Electromagnetic Wave Absorption

SiC Nanowire Mesh in High-Porosity Silicon Foam for Enhanced Electromagnetic Wave Absorption

Enhanced Wave Absorption and Mechanical Properties of Cobalt Sulfide/PVDF Composite Materials

Heating Behavior of Silicon Carbide Fiber Mat under Microwave

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