High temperature electromagnetic wave absorption properties of SiCf/Si3N4 composite induced by different SiC fibers

Zhou, Qian; Yin, Xiaowei; Ye, Fang; Tang, Zhiming; Mo, Ran; Cheng, Laifei

doi:10.1016/j.ceramint.2018.12.142

Cited by 67 publications

(12 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Reflection loss (RL) is the most important parameter to evaluate the microwave absorption performance of an absorber. According to the transmission line theory, the RL value of a material at a specific thickness and frequency can be calculated using the following equation …”

Section: Resultsmentioning

confidence: 99%

Ultralight and High-Strength SiC_nw@SiC Foam with Highly Efficient Microwave Absorption and Heat Insulation Properties

Wang

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

An ultralight and high-strength SiCnw@SiC foam with highly efficient microwave absorption and heat insulation properties was successfully synthesized using the template sacrifice method and chemical vapor deposition process. The microstructure is a novel double network structure, which is formed by the coupling of the morphology-controlled SiCnw and the SiC skeleton. The introduction of SiCnw can not only provide more interface polarization and dielectric loss to the SiC foam, which greatly enhances the microwave absorption capacity of the composite foam, but also can enable it to act as an excellent radiation absorbent, which can effectively reduce the thermal conductivity of the foam, especially at high temperatures. In this study, a minimum reflection loss (RL min) of −52.49 dB was achieved at 2.82 mm thickness with an effective absorption bandwidth of 5.6 GHz. As the length/diameter ratio of SiCnw decreases, the composite foam exhibits excellent high-temperature thermal insulation and mechanical properties. For the SiCnw@SiC foam, the thermal conductivity is only 0.304 W/mK at 1200 °C and the compressive strength reaches 1.53 MPa. This multifunctional SiCnw@SiC foam is an outstanding material, which has potential applications in microwave absorption and high-temperature heat insulation in harsh environments.

show abstract

Section: Resultsmentioning

confidence: 99%

Ultralight and High-Strength SiC_nw@SiC Foam with Highly Efficient Microwave Absorption and Heat Insulation Properties

Wang

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…The grape-like Fe 3 O 4 -multiwalled carbon nanotubes composites are synthesized by Yuan et al Unique multiscale-assembled morphology builds a large number of interfaces for polarization loss, achieving an effective bandwidth in X-band in the temperature range of 323–473 K with a thickness of 3.2 mm [ 7 ]. Besides, many hybrid absorbents with fibrous-like or core–shell structures also exhibit enhanced microwave absorption properties at elevated temperatures [ 8 , 9 ]. However, the morphological designs for absorbents are essentially an enhancement of the intrinsic EM loss mechanisms including magnetic and dielectric losses.…”

Section: Introductionmentioning

confidence: 99%

Bio-Inspired Microwave Modulator for High-Temperature Electromagnetic Protection, Infrared Stealth and Operating Temperature Monitoring

Yang

Duan

Liu³

et al. 2021

Nano-Micro Lett.

View full text Add to dashboard Cite

High-temperature electromagnetic (EM) protection materials integrated of multiple EM protection mechanisms and functions are regarded as desirable candidates for solving EM interference over a wide temperature range. In this work, a novel microwave modulator is fabricated by introducing carbonyl iron particles (CIP)/resin into channels of carbonized wood (C-wood). Innovatively, the spaced arrangement of two microwave absorbents not only achieves a synergistic enhancement of magnetic and dielectric losses, but also breaks the translational invariance of EM characteristics in the horizontal direction to obtain multiple phase discontinuities in the frequency range of 8.2–18.0 GHz achieving modulation of reflected wave radiation direction. Accordingly, CIP/C-wood microwave modulator demonstrates the maximum effective bandwidth of 5.2 GHz and the maximum EM protection efficiency over 97% with a thickness of only 1.5 mm in the temperature range 298–673 K. Besides, CIP/C-wood microwave modulator shows stable and low thermal conductivities, as well as monotonic electrical conductivity-temperature characteristics, therefore it can also achieve thermal infrared stealth and working temperature monitoring in wide temperature ranges. This work provides an inspiration for the design of high-temperature EM protection materials with multiple EM protection mechanisms and functions.

show abstract

“…In recent years, numerous materials have been used in the design, preparation and research of RACs, including metal oxides, ceramics, and carbon-based materials, such as Si3N4, SiCf/SiC, TiC, Ti3SiC2, ZnO, MnO2, carbon fibers, CNTs and graphene [23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39] .…”

Section: Introductionmentioning

confidence: 99%

High temperature metamaterial enhanced electromagnetic absorbing coating prepared with alumina ceramic

Zhao

Shao

et al. 2021

Journal of Alloys and Compounds

View full text Add to dashboard Cite

High temperature electromagnetic wave absorption properties of SiCf/Si3N4 composite induced by different SiC fibers

Cited by 67 publications

References 38 publications

Ultralight and High-Strength SiC_nw@SiC Foam with Highly Efficient Microwave Absorption and Heat Insulation Properties

Ultralight and High-Strength SiC_nw@SiC Foam with Highly Efficient Microwave Absorption and Heat Insulation Properties

Bio-Inspired Microwave Modulator for High-Temperature Electromagnetic Protection, Infrared Stealth and Operating Temperature Monitoring

High temperature metamaterial enhanced electromagnetic absorbing coating prepared with alumina ceramic

Contact Info

Product

Resources

About

High temperature electromagnetic wave absorption properties of SiCf/Si3N4 composite induced by different SiC fibers

Cited by 67 publications

References 38 publications

Ultralight and High-Strength SiCnw@SiC Foam with Highly Efficient Microwave Absorption and Heat Insulation Properties

Ultralight and High-Strength SiCnw@SiC Foam with Highly Efficient Microwave Absorption and Heat Insulation Properties

Bio-Inspired Microwave Modulator for High-Temperature Electromagnetic Protection, Infrared Stealth and Operating Temperature Monitoring

High temperature metamaterial enhanced electromagnetic absorbing coating prepared with alumina ceramic

Contact Info

Product

Resources

About

Ultralight and High-Strength SiC_nw@SiC Foam with Highly Efficient Microwave Absorption and Heat Insulation Properties

Ultralight and High-Strength SiC_nw@SiC Foam with Highly Efficient Microwave Absorption and Heat Insulation Properties