An overview of C-SiC microwave absorption composites serving in harsh environments

Adapting to extremely harsh service environments is an unavoidable challenge for microwave absorption (MA) materials. Among MA materials, C-SiC composites stand out due to their excellent overall performance. This article provides a comprehensive review of the latest and most critical achievements regarding C-SiC MA materials. First, an introduction to the most basic preparation methods for obtaining C-SiC composites is presented. Next, the MA mechanisms of these composites are thoroughly analyzed to clarify the origin and contribution of the dielectric loss mechanism, providing theoretical support and guidance for the design of MA materials. Most importantly, the MA performance of C-SiC composites in harsh environments, including their high-temperature resistance, thermal conduction, thermal insulation, and anti-corrosion behavior, are highlighted. Finally, the achievements and challenges faced by C-SiC composites are summarized and some useful suggestions are proposed to guide the multi-functional application of C-SiC composites in harsh environments.