Preparation and High-temperature Oxidation Properties of Cf/mullite Composites

IF 2.8 3区材料科学 Q3 CHEMISTRY, PHYSICAL

Silicon Pub Date : 2024-11-13 DOI:10.1007/s12633-024-03195-2

Bangxiao Mao, Xisheng Xia, Dakui Wang, Guangren Yang, Hengzheng Li, Guosheng Gao

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Abstract

Developing materials that possess both excellent electromagnetic wave absorption performance and good mechanical properties is crucial for meeting the demands of the military environment. In this study, the carbon fiber reinforced mullite (C_f/mullite) composites were prepared using T300 carbon fiber as the starting material, along with a mixture of alumina sol and silica sol. The C_f/mullite composites exhibited good electromagnetic wave absorption performance under temperature treatment conditions of 700℃ and had a lower dielectric constant, which achieved a minimum reflection loss of -14.28 dB at 1.90 mm, corresponding to a frequency of 17.12 GHz. Additionally, it demonstrated a maximum effective absorption bandwidth of 3.61 GHz at a thickness of 2.10 mm. To meet the mechanical performance requirements under high-temperature conditions, the composites attained a maximum compressive strength of 292.19 MPa under treatment conditions of 500℃. This study provides insights into material selection for future aircraft, particularly in high-temperature and radar detection environments.

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Cf/莫来石复合材料的制备及其高温氧化性能

开发既具有优异的电磁波吸收性能又具有良好力学性能的材料对于满足军事环境的要求至关重要。本研究以T300碳纤维为起始材料，与氧化铝溶胶和硅溶胶混合制备碳纤维增强莫来石（Cf/莫来石）复合材料，在700℃的温度处理条件下，Cf/莫来石复合材料具有良好的电磁波吸收性能，并且具有较低的介电常数，在1.90 mm处，对应17.12 GHz的频率，反射损耗最小，为-14.28 dB。此外，在厚度为2.10 mm时，其最大有效吸收带宽为3.61 GHz。为满足高温条件下的力学性能要求，复合材料在500℃处理条件下的最大抗压强度达到292.19 MPa。这项研究为未来飞机的材料选择提供了见解，特别是在高温和雷达探测环境中。

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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来源期刊

Silicon CHEMISTRY, PHYSICAL-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

5.90

自引率

20.60%

发文量

685

审稿时长

>12 weeks

期刊介绍： The journal Silicon is intended to serve all those involved in studying the role of silicon as an enabling element in materials science. There are no restrictions on disciplinary boundaries provided the focus is on silicon-based materials or adds significantly to the understanding of such materials. Accordingly, such contributions are welcome in the areas of inorganic and organic chemistry, physics, biology, engineering, nanoscience, environmental science, electronics and optoelectronics, and modeling and theory. Relevant silicon-based materials include, but are not limited to, semiconductors, polymers, composites, ceramics, glasses, coatings, resins, composites, small molecules, and thin films.