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Research Article | Open Access | Just Accepted

A novel mullite anti-gyroid/SiC gyroid ceramic metastructure based on digital light processing 3D printing with enhanced electromagnetic wave absorption and mechanical properties

Chaoyang Wanga,bXiao Chena,bZhicheng Wanga,bJialin Baia,bJie Tanga,bYulong Shea,bZhengren Huanga,b( )Yong Yanga,b( )

aState Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

bCollege of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China

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Abstract

SiC-based composites are widely used as electromagnetic wave absorbers due to their excellent dielectric properties. However, the constraints associated with structural design and the intricacies of the preparation process hinder their broader application. In this study, the novel Mullite Anti-Gyroid/SiC Gyroid metastructures are designed to integrate the mechanical and electromagnetic wave (EMW) absorption properties of composite materials. Mullite Anti-Gyroid/SiC Gyroid composites are fabricated utilizing a combination of digital light processing (DLP) 3D printing and precursor infiltration and pyrolysis (PIP) processes. Through the modulation of structural units, the regulation of electromagnetic parameters can be effectively realized, thus improving the impedance matching characteristics of the composites. The structural composites show outstanding EMW absorption properties, with a minimum reflection loss of -54 dB at a thickness of 1.9 mm and an effective absorption bandwidth of 3.20 GHz at a thickness of 2.2 mm. Furthermore, the PIP process significantly enhances the mechanical properties of the composites, the flexural strength improves to be 3.69~5.85 times (13.28 ± 1.15 MPa vs 49.05 ± 1.07 - 77.78 ± 3.72 MPa) and the compressive strength improves to be 4.59-13.58 times (8.55 ± 0.90 MPa vs 39.02 ± 1.63 - 116.13 ± 2.58 MPa), compared with the mullite/SiC ceramics. This approach offers a novel and effective method for fabricating structural composites with an expanded range of higher electromagnetic wave absorption properties and improved mechanical properties.

Journal of Advanced Ceramics
Cite this article:
Wang C, Chen X, Wang Z, et al. A novel mullite anti-gyroid/SiC gyroid ceramic metastructure based on digital light processing 3D printing with enhanced electromagnetic wave absorption and mechanical properties. Journal of Advanced Ceramics, 2024, https://doi.org/10.26599/JAC.2024.9220930

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Received: 11 March 2024
Revised: 13 June 2024
Accepted: 15 June 2024
Available online: 16 June 2024

© The author(s) 2024

The articles published in this open access journal are distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/).

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