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材料工程  2020, Vol. 48 Issue (5): 41-48    DOI: 10.11868/j.issn.1001-4381.2018.001427
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
SiCNW-Cf/LAS复合材料的制备和电磁波吸收性能
丁楚珩1, 侯甲彬2, 夏龙1, 张昕宇1, 钟博1, 张涛1
1. 哈尔滨工业大学(威海) 材料学院, 山东 威海 264209;
2. 山东交通学院 船舶与轮机工程学院, 山东 威海 264209
Preparation and electromagnetic wave absorption properties of SiCNW-Cf/LAS composites
DING Chu-heng1, HOU Jia-bin2, XIA Long1, ZHANG Xin-yu1, ZHONG Bo1, ZHANG Tao1
1. School of Materials, Harbin Institute of Technology(Weihai), Weihai 264209, Shandong, China;
2. Naval Architecture & Marine Engineering College, Shandong Jiaotong University, Weihai 264209, Shandong, China
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摘要 采用热蒸发法,以乙炔黑为碳源,在碳纤维(Cf)布上制备不同摩尔硅碳比的SiC纳米线(SiCNW)。通过浆料浸渍及真空烧结工艺,以不同摩尔硅碳比下制备的SiCNW-Cf作为中间夹层制备SiCNW-Cf/LAS(Li2O-Al2O3-SiO2)复合材料。结果表明:随着摩尔硅碳比的减小,SiCNW的直径不断减小,产量先增加后减小,并在摩尔硅碳比为1:3时达到最高。摩尔硅碳比为1:1时,所制备的SiCNW-Cf/LAS具有对电磁波的最低反射损耗-40.9 dB(7 GHz,3 mm)。摩尔硅碳比为1:3时,所制备的SiCNW-Cf/LAS具有吸收电磁波的最大有效带宽4.61 GHz(Ku波段,1.5 mm)。SiCNW-Cf/LAS复合材料优异的吸波性能归因于其对电磁波较高的介电损耗、散射损耗以及LAS对材料与空间阻抗匹配的调整。
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丁楚珩
侯甲彬
夏龙
张昕宇
钟博
张涛
关键词 SiCNW-Cf/LAS不同摩尔硅碳比吸波性能电磁波损耗机理    
Abstract:SiCNW were prepared with different molar ratio of silicon to carbon on carbon fiber cloth by thermal evaporation method using acetylene black as carbon source. SiCNW-Cf/LAS(Li2O-Al2O3-SiO2) were prepared by using slurry-impregnation and vacuum sintering process with SiCNW-Cf as intermediate interlayer. The results show that as the molar ratio of silicon to carbon decreasing, the diameter of SiCNW decreases continuously, and the yield first increases and then decreases and reaches the highest when the molar ratio of silicon to carbon is 1:3. The SiCNW-Cf/LAS prepared with a molar ratio of silicon to carbon of 1:1 has a minimum reflection loss of -40.9 dB (7 GHz, 3 mm) for electromagnetic wave. The SiCNW-Cf/LAS prepared at a molar ratio of silicon to carbon of 1:3 has a maximum effective bandwidth for absorbing electromagnetic wave of 4.61 GHz (Ku band, 1.5 mm). The excellent absorbing properties of SiCNW-Cf/LAS composites can be attributed to their higher dielectric loss and scattering loss for electromagnetic wave and adjustment of LAS to material and space impedance matching.
Key wordsSiCNW-Cf/LAS    different molar ratio of silicon to carbon    absorbing property    electromag-netic wave loss mechanism
收稿日期: 2018-12-10      出版日期: 2020-05-28
中图分类号:  TB332  
通讯作者: 夏龙(1978-),男,副教授,博士,从事专业:陶瓷基复合材料,联系地址:山东省威海市环翠区文化西路2号哈尔滨工业大学(威海)材料学院(264209),E-mail:xialong@hit.edu.cn     E-mail: xialong@hit.edu.cn
引用本文:   
丁楚珩, 侯甲彬, 夏龙, 张昕宇, 钟博, 张涛. SiCNW-Cf/LAS复合材料的制备和电磁波吸收性能[J]. 材料工程, 2020, 48(5): 41-48.
DING Chu-heng, HOU Jia-bin, XIA Long, ZHANG Xin-yu, ZHONG Bo, ZHANG Tao. Preparation and electromagnetic wave absorption properties of SiCNW-Cf/LAS composites. Journal of Materials Engineering, 2020, 48(5): 41-48.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2018.001427      或      http://jme.biam.ac.cn/CN/Y2020/V48/I5/41
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