【作者】 谢炜； 程海峰； 楚增勇； 周永江； 唐耿平； 陈朝辉；

【Author】 XIE Wei CHENG Hai-feng CHU Zeng-yong ZHOU Yong-jiang TANG Ceng-ping CHEN Zhao-hui (Key Lab of Novel Ceramic Fibers & Composites,National University of Defense Technology,Changsha 410073,China)

【机构】 国防科技大学新型陶瓷纤维及其复合材料国防科技重点实验室；

【摘要】 为了将不同直径分布范围的铁纤维分离出来, 根据平抛运动原理自行设计了气流分级装置,并在该装置上进行气流分级实验,得到不同直径分布范围的3个组分。借助扫描电镜和矢量网络分析仪对所得组分进行了分析。结果表明,分级后纤维的直径分布范围更加集中,电磁参数区别明显。其模拟反射率计算结果表明, 直径较细的纤维吸波性能好。更多还原

【Abstract】 In order to get iron fibers with a suitable diameter distribution and good microwave-absorbing properties,a grading technique was employed in this paper.Grading process is carded out on the grading machine designed by ourselves.The microstructure and electromagnetic characteristics of iron fiber after gradation treatment were studied by SEM and voter network analyzer.The results revealed that iron fibers with narrower diameter distribution could be obtained using grading techniques.The microwave absorption properties of the iron fibers can also be improved by regulating the electromagnetic parameters with diameter distribution.更多还原