比较了目前空间遥感相机中常用的四种反射镜镜体材料——ULE,Zerodur,铍(Be)和碳化硅(Sic)的各项性能。结果表明:SiC陶瓷具备比较明显的综合优势,是制备空间用反射镜的最佳候选材料。阐述了碳化硅反射镜镜坯的四种制备工艺。介绍了当前国内外碳化硅质轻型反射镜镜坯的发展情况。 The performance of the four mirror body materials commonly used in space remote sensing cameras, such as ULE, Zerodur, beryllium (Be) and silicon carbide (SiC), is compared. The results show that: SiC ceramic has more obvious advantages, it is the best candidate for the preparation of space mirror. Four kinds of preparation process of silicon carbide mirror billet are described. The development of SiC carbide mirror mirror blanks at home and abroad are introduced.