中文摘要：

利用液相还原法制备了纳米FeNi粉体.利用XRD和SEM 分别对FeNi粉体的物相、形貌进行了分析,并通过矢量网络分析仪,利用同轴方法对FeGNi粉体/固体石蜡复合材料进行了电磁参数的测定.研究表明,制备出的铁镍复合粉体主要成分为FeNi;FeNi粉体为球形,直径约为100nm,分布均匀.利用实验所得到的数据模拟了FeNi复合材料不同厚度涂层的吸波性能,当涂层厚度为2mm 时,复合材料的吸收峰值R达到-6.25dB,小于-4dB带宽从13.24-16.47GHz;在2-18GHz频率范围内,当涂层厚度为4mm 时,FeNi粉体/固体石蜡复合材料出现了两个吸收峰,其值都小于-4.5dB.

英文摘要：

The nano FeNi powders were prepared by liquid phase reduction method.The phase and morphology of FeNi powders were analyzed using XRD and SEM,respectively.The electromagnetic parameters of FeNi powder/solid paraffin composites were measured by the vector network analyzer using the method of coaxial. The results show that the main ingredient of the iron nickel composite powder is FeNi.FeNi powder is spheri-cal.The diameter is about 100 nm.It distributes uniformly.The reflection loss R(dB)of the FeNi composite materials were simulated with the experimental data.When the thickness is 2 mm,the absorption peak value can reach -6.25 dB,the reflection loss R(dB)is less than -4 dB bandwidth from 13.24 GHz to 16.47 GHz.In 2-18 GHz frequency range,when the thickness is 4 mm,FeNi powder/solid paraffin composites appeared two absorption peaks,which values are less than -4.5 dB.