| SiO_2-SiC基复合材料吸波性能的研究 |
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| 引用本文： | 关莉,范冰冰,李凯,刘琛,张艳红,王海龙,张锐. SiO_2-SiC基复合材料吸波性能的研究[J]. 稀有金属材料与工程, 2009, 38(Z2) |
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| 作者姓名： | 关莉 范冰冰 李凯 刘琛 张艳红 王海龙 张锐 |
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| 作者单位： | 郑州大学,河南,郑州,450001 |
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| 摘 要： | 首先利用溶胶-凝胶法制备SiO_2-SiC复合粉体,采用SEM、XRD、DSC-TG等技术对复合粉体进行表征.结果表明,溶胶-凝胶法能够制备具有核-壳结构SiO_2-SiC复合粉体.再将SiO_2-SiC复合粉体与BaTiO_3、Fe_3O_4以及环氧树脂以不同比例进行混合固化制得吸波材料样品,采用矢量网络分析仪测量样品的反射率.结果表明,SiO_2-SiC复合粉体具有一定的吸波效果,20%含量的SiO_2-SiC复合粉体样品在18 GHz时反射率达-2.07 dB,BaTiO_3、Fe_3O_4的加入实现复合吸波效果,当SiO_2-SiC:BaTiO_3:Fe_3O_4=6:2:2(体积分数,下同)时,在5.75 GHz时反射率达到-13.97 dB,合格带宽为10.08 GHz.
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| 关 键 词： | 吸波材料 复合吸波 反射率 |
Synthesis and Microwave-Absorption Properties of SiO_2-SiC Matrix Composites |
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| Guan Li,Fan Bingbing,Li Kai,Liu Chen,Zhang Yanhong,Wang Hailong,Zhang Rui. Synthesis and Microwave-Absorption Properties of SiO_2-SiC Matrix Composites[J]. Rare Metal Materials and Engineering, 2009, 38(Z2) |
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| Authors: | Guan Li Fan Bingbing Li Kai Liu Chen Zhang Yanhong Wang Hailong Zhang Rui |
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| Affiliation: | Guan Li,Fan Bingbing,Li Kai,Liu Chen,Zhang Yanhong,Wang Hailong,Zhang Rui (Zhengzhou University,Zhengzhou 450001,China) |
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| Abstract: | SiO2-SiC composite particles were prepared by using a sol-gel process. The techniques of SEM,XRD and DSC-TG were used to characterize the phase and microstructure of the as-obtained SiO2-SiC particles. The results show that a core-shell structure was constructed in the composite particles with the core of SiC and the shell of amorphous SiO2. The microwave absorbents were blended and solidified with epoxide resin ,SiO2-SiC composite particles,BaTiO3 and Fe3O4 powders with various ratios. The vector network a... |
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| Keywords: | SiO_2-SiC microwave-absorption materials composite absorbents SiO_2-SiC particles reflectivity |
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