Multimodal design of silicon carbide electromagnetic wave absorber used for high-temperature

With the advancement of aerospace and military technologies, critical components in aircraft and defense systems are expected to meet electromagnetic wave (EW) stealth requirements under extreme conditions, such as high temperatures, airflow erosion and low density. Developing EW absorbing materials suitable for high-temperature environments has become a key pursuit in the field. Among numerous materials, silicon carbide (SiC) stands out due to its thermal stability, tunable dielectric properties, low density and resistance to corrosion at elevated temperatures. However, few studies link high-temperature performance to electromagnetic wave absorption (EWA) across scales, limiting mechanistic insight and material design for harsh environments. This review examines the regulation mechanisms and structural optimization strategies for SiC, focusing on high-temperature resistance and EWA. Design approaches (e.g., doped, multiphase design, microstructure regulating and structure assembling) are discussed in terms of classification, working principles, benefits, and limitations. Recent progress in curvature engineering is also highlighted as a promising route for defect regulation. Finally, future directions are considered from the perspectives of thermal stability, defect control, and aerospace applications. This review aims to offer new perspectives for the development of EW absorbing materials suited for demanding service conditions.