SiCw-Co复合材料的制备及吸波性能的研究  

Research on Preparation and Absorbing Properties of SiCw-Co Composite Materials

作　　者：李敏 刘宏达 乔宁 陈旸 LI Min;LIU Hongda;QIAO Ning;CHEN Yang(College of Materials Science and Engineering,North China University of Science and Technology,Tangshan 063000,China)

机构地区：[1]华北理工大学材料科学与工程学院,唐山063000

出　　处：《中国陶瓷》2020年第3期39-44,共6页China Ceramics

基　　金：河北省自然科学基金青年基金(E2016209327);华北理工大学大学生创新创业训练计划项目(X2019098)。

摘　　要：为了改善SiC晶须的磁损耗性能,提高吸波性能,扩大其在科技、军事等领域的应用范围。本实验采用化学镀钴的方式制备SiCw-Co复合材料,选定化学镀溶液中硫酸钴的质量、化学镀的时间、化学镀的温度三个因素,设计了一个“三因素三水平”的正交实验,运用极差分析法讨论硫酸钴的质量、化学镀的时间和温度对SiCw-Co复合材料吸波性能的影响,最终得到制备SiCw-Co复合材料的最佳工艺。结果表明:在SiC晶须表面镀钴的最佳条件:化学镀溶液中硫酸钴的质量为8.0 g,化学镀时间为5 min,化学镀的温度为80℃。此时SiCw-Co复合材料的吸波性能最好,反射损失率最小为-20.12 dB,低于-10 dB的波段宽度约为3 GHz,同时具有一定的介电损耗和磁损耗能力。In order to improve the magnetic loss performance of SiC whiskers,improve their wave absorbing performance and expand their application range in science and technology,military and other fields.In this experiment,SiCw-Co composites were prepared by chemical plating cobalt.In this chemical plating experiment,we designed an orthogonal experiment with three factors and three levels depending on three factors that the weight of cobalt sulfate,chemical plating time,chemical plating temperature.The influence of the weight of cobalt sulfate,the chemical time and temperature on the wave absorption properties of SiCw-Co composite material was discussed by using range analysis method,and finally the best process for preparing SiCw-Co composite material was obtained.The result analysis showed that the chemical plating has played a certain role.The optimum conditions for cobalt plating on SiC whiskers were as follows:the weight of cobalt sulfate in chemical plating solution was 8.0 g.When the time of chemical plating was 5min and the temperature was 80℃,SiCw-Co reflection loss rate was reach to-20.12 dB.It indicated that the composite material had the better wave-absorbing property.The band width below-10 dB was about 3 GHz,and it had certain dielectric loss and magnetic loss capability.

关 键 词：吸波材料 SIC晶须 化学镀 钴 

分 类 号：TQ174.758.22[化学工程—陶瓷工业]