隐身吸波材料的研究进展

Development of Stealth Radarwave Absorbing Materials

介绍了传统吸波材料和新型吸波材料的研究进展。铁氧体、金属微粉、钛酸钡、碳化硅、石墨、导电纤维等均为传统吸波材料,它们通常都存在吸收频带窄、密度大等缺点。新型吸波材料包括纳米材料、金属纤维材料、"手征"材料、导电高聚物及电路模拟吸波材料等,它们具有不同于传统吸波材料新型的吸波机制。传统吸波材料以强吸收为主要目标,新型吸波材料则要满足"薄、宽、轻、强"的要求。作者在已制备出丝径2μm具有高磁导率金属纤维的基础上,提出要开展具有纳米异质结构包覆的亚微米金属磁性纤维制备技术及材料的雷达波吸收性能研究。

This article is a review of traditional and new-type radarwave absorbing materials. The traditional absorbing materials include： ferrite, metal micropowder, BaTiO, SiC, graphite, conducting fibers, et al, which commonly have some shortcoming, such as narrow adsorbing microwave frequency range and high density. Nanomaterials, metallic fibers, chiral materials, conducting polymer and circuit-simulate absorbing materials belong to new-type absorbing materials. They have some new type wave-absorbing mechanism. Strong absorbing is the main goal of traditional wave absorbing materials. However, new-type absorbing materials should satisfy ＂wide, high, thin and strong application demand＂. Based on 2 μm metallic fibers fabrication technology, the authors will pay much attention on the research of sub-micrometer metal magnetic fibers with heterogeneous nanostructures coating and its radar wave adsorbing properties in the future.