Enhanced electromagnetic wave absorption properties of a novel SiC nanowires reinforced SiO2/3Al2O3·2SiO2 porous ceramic

Dong, Yongpeng; Fan, Xiaomeng; Wei, Hanjun; Hou, Zexin; Li, Minghang; Qu, Qiang; Yin, Xiaowei; Cheng, Laifei; Zhang, Litong

doi:10.1016/j.ceramint.2020.06.006

Cited by 24 publications

(9 citation statements)

References 48 publications

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“…The test methods mainly include the shielding room test, coaxial transmission line, and coaxial transmission line methods (Figure 2a), which are widely used in laboratories. [35] EMI SE is calculated using the scattering parameters obtained from the two ports using the following formulas [36] T…”

Section: Test Of Electromagnetic Shielding Performancementioning

confidence: 99%

Review on Shielding Mechanism and Structural Design of Electromagnetic Interference Shielding Composites

Wang

Liu

et al. 2021

Macro Materials & Eng

112

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Conductive polymer composites (CPCs) for electromagnetic interference shielding have received significant attention and shown rapid development. According to the electromagnetic wave interface conduction theory of Schelkunoff, excellent conductive performance and perfect conductive network structure are prerequisites for high shielding efficiency of electromagnetic interference shielding composites. Effective multiple interface reflection absorption, dielectric loss, and hysteresis loss characteristics of the materials are crucial for realizing the regulation of the electromagnetic interference shielding performance of CPCs. Therefore, the structural design of conductive and magnetic network for CPCs is crucial for achieving high shielding performance. In this study, it is established that an electromagnetic shielding composite with a uniform structure is widely used because of its simple preparation process, but its inefficient conductive network causes a high percolation threshold. The inefficiency can be solved by designing a composite structure and improving the efficiency of the conductive network. Currently, common structural designs include segregated structural, layered structural, and foam structural designs. These structural designs effectively solve the problem of high percolation threshold of CPCs and coordinate the contradiction between the performance of electromagnetic interference shielding and other advantages.

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Section: Test Of Electromagnetic Shielding Performancementioning

confidence: 99%

Review on Shielding Mechanism and Structural Design of Electromagnetic Interference Shielding Composites

Wang

Liu

et al. 2021

Macro Materials & Eng

112

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“…Porous ceramic is a kind of ceramic material with specific pore structure and porosity prepared by batching, molding and sintering processes [1], which has high temperature resistance, acid and alkali corrosion resistance, good biological inertia, good thermal shock resistance, adjustable pore structure and porosity, and good reuse performance. Porous ceramic is commonly used in refractory heat insulation materials, lightweight structural materials, sound-absorbing materials, filtration materials, catalyst carriers and ceramic sensors, which plays a critical role in industry, life, electronics, national defense and aerospace fields [2][3][4][5][6][7][8][9]. At present, the ordinary materials for the synthesis of porous ceramics are mainly high purity chemical materials and natural mineral materials.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and properties of porous ceramics synthesized using Kubuqi desert sand

Fan

Wang

et al. 2022

Materials

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Desert sand has the characteristics of large reserves, high quartz content, small and uniform particle size, low organic content and so on. High performance porous ceramic materials were prepared by particle stacking from Kubuqi desert sand, and the effects of forming pressure, holding time and sintering temperature on phase transformation, microstructure, sintering properties, mechanical properties and thermal conductivity of ceramics were investigated. The results show that the high temperature melting of feldspar phase in desert sand binds the quartz particles together to form a stable porous structure ranging from several microns to hundreds of microns, and the decomposition of ferric oxide leads to the formation of closed

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“…For instance, SiC nanowires, a non-oxide ceramic material, attracted great interest as a highly promising nanomaterial for many industrial applications due to their superior electric and mechanical properties, as well as heat, corrosion, and high temperature oxidation resistance [ 5 , 6 , 7 ]. These unique properties enable SiC nanowires to be used as ideal candidates for nanodevices for sensing and biosensing applications, or in composite materials as a reinforcement [ 8 , 9 , 10 ]. To the key role, SiC nanowires are widely used in aerospace, nuclear, braking systems and other industrial fields [ 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Adjusting the Morphology and Properties of SiC Nanowires by Catalyst Control

Guo

Cheng

et al. 2020

Materials

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We report on the growth of SiC nanowires on a single crystal Si substrate by pyrolysis of polycarbosilane and using two catalyst (Al2O3 and Ni) films with different thickness (2, 4, and 6 nm). The catalyst films were deposited on the Si substrate, and the SiC nanowires were grown according to two mechanisms, i.e., the oxide-assisted growth mechanism and vapor- liquid-solid mechanism. As a result, pearl-chain-like SiC nanowires and straight SiC nanowires were obtained. The prepared nanowires exhibited excellent photoluminescence properties, emission spectra displaying two emission peaks at 395 and 465 nm, and have good thermal stability below 1000 °C. The experimental results revealed the importance of the catalyst in controlling the morphology and properties of SiC nanowires.

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Enhanced electromagnetic wave absorption properties of a novel SiC nanowires reinforced SiO2/3Al2O3·2SiO2 porous ceramic

Cited by 24 publications

References 48 publications

Review on Shielding Mechanism and Structural Design of Electromagnetic Interference Shielding Composites

Review on Shielding Mechanism and Structural Design of Electromagnetic Interference Shielding Composites

Microstructure and properties of porous ceramics synthesized using Kubuqi desert sand

Adjusting the Morphology and Properties of SiC Nanowires by Catalyst Control

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