Effect of Ferrocene Content on the Properties of SLS-CVR Formed SiCnw/SiC Absorbing Ceramics

doi:10.3901/JME.2025.23.321

Abstract

Abstract: The importance of ceramic-based absorbing materials in enhancing the stealth performance of weaponry and addressing electromagnetic pollution issues is increasingly highlighted due to their excellent chemical stability, high-temperature stability, and low density. However, traditional absorbing coatings are limited in their ability to meet diverse demands for integrated structure-performance due to constraints in design dimensions and preparation methods. Selective laser sintering (SLS) technology can prepare SiC green parts and introduced in-situ grown SiC nanowire (SiC_nw) through chemical vapor reaction (CVR) to prepare highly designable and comprehensively SiC_nw/SiC absorbing ceramics. When the addition of ferrocene is 1wt%, the real part of dielectric constant (ε') of the sample is increased, and two significant formants of the imaginary part of dielectric constant(ε'') appeared. The minimum reflection loss(RL) is ?40.60 dB when the thickness of the sample is 3.4 mm and the electromagnetic wave frequency is 8.94 GHz, and the maximum effective absorption bandwidth(EAB) is 13.53 GHz. This study provides a new idea for theadditive manufacturing of structure-absorbing integrated SiC_nw/SiC absorbing ceramics.

Key words: SiC absorbing ceramics, selective laser sintering, chemical vapor reaction, silicon carbide nanowire, absorbing performance

CLC Number:

TQ174
TQ163

FANG Zhiqiang, ZHANG Yangze, WU Jiamin, MAO Chen, CHEN Ying. Effect of Ferrocene Content on the Properties of SLS-CVR Formed SiC_nw/SiC Absorbing Ceramics[J]. Journal of Mechanical Engineering, 2025, 61(23): 321-330.

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Effect of Ferrocene Content on the Properties of SLS-CVR Formed SiC_nw/SiC Absorbing Ceramics

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