一种陶瓷复合吸波材料的表面分形表征及其性能研究  

Study on the Surface Fractral to the Microwave Absorbing Properties of the Microwave Absorbing Ceramic Compound Material

作　　者：李积辉[1] 张卫平[1] 严晨[1] 李冬兵[1] 

机构地区：[1]解放军理工大学,江苏南京210007

出　　处：《光电技术应用》2007年第3期43-45,55,共4页Electro-Optic Technology Application

摘　　要：通过RCS(雷达截面)综合测试系统,对实验室自制的陶瓷复合吸波材料的吸波性能与材料表面形貌进行研究,结果表明:(1)陶瓷复合吸波材料表面存在分形的重要特征,所制3块材料的表面灰度分维数分别为2.3602、2.3907、2.6255;(2)实验频率范围内,陶瓷复合吸波材料的相对反射率与发射频率存在显著线性关系;(3)随着发射频率的升高,不同表面形貌的材料的相对反射率的升高速率不同;(4)陶瓷复合吸波材料的相对反射率随发射频率的变化速率(斜率)与材料表面分维数存在极其显著的线性相关性.By RCS measurement system, microwave absorbing properties of the microwave absorbing ceramic compound material were studied, as well as its surface properties. The results showed the surfaces of the material used had the fractral properties and their fractal dimensions were 2. 3602, 2. 3907 and 2. 6255 respectively, the relative refleetivity appeared linear relativity to the frequency emitted, the relative refleetivity of the material with different surface properties got different increasing speed when frequency increasing and the increasing speed （slope） of the relative reflectivity of the microwave absorbing ceramic material appeared remarkable linear relativity to its fractal dimension.

关 键 词：陶瓷复合吸波材料 表面 分形 反射率 

分 类 号：TQ153.2[化学工程—电化学工业]