Ni@SiC composites from Ni-modified PCS-derived (SiC)p with high-efficiency microwave absorption properties

IF 2.8 4区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Journal of Materials Science: Materials in Electronics Pub Date : 2025-02-20 DOI:10.1007/s10854-025-14448-0

Jianqi Wang, Yang Wang, Zhou Chen, Changyang Wang, Jilong Yang, Jian Yang, Jian Gu, Quan Li

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Abstract

Silicon carbide (SiC) presents significant application prospects in the light of wave-absorbing, attributed to its excellent electrical and physicochemical properties. By utilizing the synergistic loss mechanism, SiC compounding with the magnetic can markedly enhance the absorption efficiency of electromagnetic wave (EMW) which is an important technical mean to optimize the wave-absorbing capabilities. In this paper, polycarbosilane (PCS) was used as a precursor to prepare (SiC)_p and Ni@SiC composites were successfully synthesized by chemical plating without palladium activation, in order to explore the lightweight SiC-based wave-absorbing material that exhibits intense absorption and wide bandwidth. It is shown that when the (SiC)_p is about 60 μm, the A2-Ni@SiC demonstrates the minimum reflection loss (RL_min) of −50.27 dB at 8.04 GHz with an effective absorption bandwidth (EAB) of 5.64 GHz at 3.0 mm (from 7.24 to 12.88 GHz). When the particle size of (SiC)_p is further refined to about 5 μm, the prepared B2-Ni@SiC shows exceptional wave-absorbing performance achieving the RL_min of −66.10 dB at 3.4 mm, along with an EAB of 4.44 GHz (from 5.56 to 10.0 GHz). The enhancement in wave-absorbing is likely due to the increased interfacial polarization at the Ni-(SiC)_p interface, as well as the improved matching of the hybridized constituents.

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具有高效微波吸收性能的ni改性pcs衍生（SiC）p复合材料Ni@SiC

碳化硅（SiC）由于其优异的电学和物理化学性质，在吸波领域具有重要的应用前景。利用协同损耗机制，SiC与磁性材料复合可以显著提高电磁波的吸收效率，是优化吸波性能的重要技术手段。本文以聚碳硅烷（PCS）为前驱体制备（SiC）p，并通过化学镀法制备了不经钯活化的Ni@SiC复合材料，以探索具有强吸收和宽带宽的轻质SiC基吸波材料。结果表明，当（SiC）p约为60 μm时，A2-Ni@SiC在8.04 GHz处的反射损耗最小（RLmin）为−50.27 dB，在3.0 mm （7.24 ~ 12.88 GHz）处的有效吸收带宽（EAB）为5.64 GHz。当（SiC）p的粒度进一步细化到约5 μm时，制备的B2-Ni@SiC具有优异的吸波性能，在3.4 mm处的RLmin为- 66.10 dB， EAB为4.44 GHz （5.56 ~ 10.0 GHz）。吸收波的增强可能是由于Ni-(SiC)p界面极化的增加以及杂化组分匹配的改善。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Sodium hypophosphite monohydrate

来源期刊

Journal of Materials Science: Materials in Electronics 工程技术-材料科学：综合

CiteScore

5.00

自引率

7.10%

发文量

1931

审稿时长

2 months

期刊介绍： The Journal of Materials Science: Materials in Electronics is an established refereed companion to the Journal of Materials Science. It publishes papers on materials and their applications in modern electronics, covering the ground between fundamental science, such as semiconductor physics, and work concerned specifically with applications. It explores the growth and preparation of new materials, as well as their processing, fabrication, bonding and encapsulation, together with the reliability, failure analysis, quality assurance and characterization related to the whole range of applications in electronics. The Journal presents papers in newly developing fields such as low dimensional structures and devices, optoelectronics including III-V compounds, glasses and linear/non-linear crystal materials and lasers, high Tc superconductors, conducting polymers, thick film materials and new contact technologies, as well as the established electronics device and circuit materials.