Structural design and simulation of ultra-broadband TiCxN1-x fibers/Si3N4 high-temperature microwave absorbing composites

IF 23.2 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Composites and Hybrid Materials Pub Date : 2025-03-04 DOI:10.1007/s42114-025-01280-7

Guandong Liang, Jianqiang Bi, Shuyong Liang, Chengjiao Che, Lintao Liu, Shouliang Bie, Yao Yang

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Abstract

Currently, high-temperature ceramic-based microwave-absorbing composites face limitations such as a limited range of material systems and narrow effective absorption bandwidth, which hinder their further application in electromagnetic wave absorption field under high-temperature environments. Herein, guided by electromagnetic simulation, a lightweight (1.61 g/cm³), ultra-broadband (32.45 GHz) high-temperature (800 °C) meta-structure TiC_xN_1-x fibers/Si₃N₄ microwave-absorbing composite was prepared by combining material composition and structural design with the quick gel casting process (20 min). Density functional theory calculations confirmed the presence of strong interfacial bonding (− 1.77 J/m²) between TiC_xN_1-x fibers and the matrix. After introducing only 4 wt% TiC_xN_1-x fibers, the flexural strength and fracture toughness of the composite sample increased by 56.24% and 111.48%, respectively. Moreover, the sample exhibited superior electromagnetic wave absorption performance in the Ku-band at 800 °C compared to room temperature. Based on the electromagnetic parameters of the sample introducing 4 wt% TiC_xN_1-x fibers and the results of electromagnetic simulation calculations, a sample with a trapezoidal pyramidal meta-structure of 180 mm × 180 mm was designed and fabricated. An ultra-wideband (8.25 ~ 40 GHz, X, Ku, K, and Ka) effective absorption for electromagnetic wave in the 2 ~ 40 GHz frequency range was achieved, which is in good agreement with the electromagnetic simulation results. This study offers a fresh approach to designing lightweight, ultra-wideband, structural–functional integrated ceramic-based microwave absorbing composites for high-temperature environments.

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超宽带TiCxN1-x纤维/Si3N4高温吸波复合材料的结构设计与仿真

目前，高温陶瓷基微波吸收复合材料面临材料体系范围有限、有效吸收带宽狭窄等限制，阻碍了其在高温环境下电磁波吸收领域的进一步应用。在电磁模拟的指导下，通过材料组成和结构设计结合快速凝胶铸造工艺（20 min），制备了轻质（1.61 g/cm3）、超宽带（32.45 GHz）高温（800℃）元结构TiCxN1-x光纤/Si3N4吸波复合材料。密度泛函理论计算证实了TiCxN1-x纤维与基体之间存在强界面键合（- 1.77 J/m2）。仅添加4 wt% TiCxN1-x纤维后，复合材料的抗弯强度和断裂韧性分别提高了56.24%和111.48%。此外，样品在800°C时，与室温相比，在ku波段具有更好的电磁波吸收性能。根据引入4 wt% TiCxN1-x纤维样品的电磁参数和电磁模拟计算结果，设计并制作了尺寸为180 mm × 180 mm的梯形锥体元结构样品。实现了对2 ~ 40 GHz频段电磁波的超宽带（8.25 ~ 40 GHz, X、Ku、K、Ka）有效吸收，与电磁仿真结果吻合较好。该研究为设计用于高温环境的轻质、超宽带、结构功能集成的陶瓷基微波吸收复合材料提供了一种新的方法。

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来源期刊

Advanced Composites and Hybrid Materials Multiple-

CiteScore

26.00

自引率

21.40%

发文量

185

期刊介绍： Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.