摘要
以环氧树脂为基体制备了羰基铁粉/Co2Z型铁氧体复合吸波材料。用扫描电子显微镜（SEM）观察材料内部的微观形貌;通过矢量网络分析仪（VNA）测量所制复合材料在0.4-12 GHz频段内的复介电常数和磁导率谱。分析讨论了羰基铁粉与Co2Z铁氧体的比例对复合材料电磁参数及吸波性能的影响。结果表明：随着羰基铁粉含量的增加,复合材料的介电常数与磁导率均逐渐增大;羰基铁粉的质量分数为40%,所制复合材料的吸波性能最好,当厚为2 mm,其反射损耗小于-10 d B的带宽达5.3 GHz;厚为2.8 mm,在5.1 GHz处具有-42.6 d B的最低反射损耗。
CIP/Co2Z ferrites composites for microwave absorption were prepared with the matrix of epoxy resin. The morphology of composites was observed by scanning electron microscopy（SEM）. The complex permittivity and permeability spectra of the prepared composites were measured in 0.4-12 GHz by vector network analyzer（VNA）. The influence of the ratio of CIP to Co2Z ferrites on electromagnetic parameters and microwave absorbing properties of composites was discussed. The results indicate that with the increase of CIP content,the permittivity and permeability of composites both increase gradually. The composite prepared with 40 wt% of CIP shows the best absorbing properties. When the thickness is 2.0 mm,it＇s bandwidth of RL-10 d B reaches 5.3 GHz. When the thickness is 2.8 mm,the minimum RLof-42.6 d B is obtained at 5.1 GHz.
出处
《兵器材料科学与工程》
CAS
CSCD
北大核心
2015年第4期76-79,共4页
Ordnance Material Science and Engineering
关键词
羰基铁粉
Co2Z型铁氧体
电磁参数
微波吸收
carbonyl iron powders
Co2Z ferrites
electromagnetic parameters
microwave absorption
