利用磁控溅射的方法对空心玻璃微球表面镀Al,研究了由镀Al空心玻璃微球/Ni-Zn铁氧体制成的复合材料在雷达波频段范围内的电磁特性,利用模型计算了所制备样品的微波反射率,并与实测反射率进行对比.结果表明,随着镀Al空心玻璃微球含量的增加,复合材料介电常数实部,虚部均增加,而磁导率的实部和虚部均减小;计算反射率数值与实测数值基本相吻合.由此可见.通过改变镀Al空心玻璃微球和Ni-Zn铁氧体的比例,可以调节电磁参数,提高材料的吸波性能.
Magnetron sputtering was employed to sputter Al on hollow glass micro-ball. The electromagnetic characteristic of the composites consisting of Al-coated hollow glass micro-ball/Ni-Zn ferrite was studied in microwave frequency range. The microwave absorbing property (R) of composite was theoretically calculated and contrasted with the measured result. It was found that the μ' μ" ,R of the composites decreased with the increase of micro-ball content, as well as the ε' and ε" increased. The calculated R was consistent with the measured result. Thus through changing the ratio of Al-coated hollow glass micro-ball and Ni-Zn ferrite, the electromagnetic parameter of the composite could be adjusted and microwave absorbing property of the materials could be improved.
参考文献
| [1] | 谢俊磊,杜仕国,施冬梅.新型雷达吸波材料研究进展[J].飞航导弹,2008(07):58-61. |
| [2] | 哈恩华,黄大庆,丁鹤雁.新型轻质雷达吸波材料的应用研究及进展[J].材料工程,2006(03):55-59. |
| [3] | Toru Maeda;Satoshi Sugimoto;Toshio Kagotani.Effect of the soft/hard exchange interaction on natural resonance frequency and electromagnetic wave absorption of the rare earth 2iron 2boron compounds[J].Journal of Magnetism and Magnetic Materials,2004(281):195-205. |
| [4] | 陶西才.吸波涂料在民用产品上的应用[J].安全与电磁兼容,2003(01):42-42. |
| [5] | 李寅彦,毛昌辉,杨志民,杜军,唐群.空芯玻璃微球表面改性及其介电性能研究[J].稀有金属,2005(03):257-260. |
| [6] | 葛凯勇,王群,毛倩瑾,于彩霞,周美玲.空心微珠表面改性及其吸波特性[J].功能材料与器件学报,2003(01):67-70. |
| [7] | Xu Hongfei;Xu Lina;Gu Ning .A new electromagnetic functional material composed of metallic hollow micro-spheres[J].Journal of Southeast University,2003(1):8-11. |
| [8] | 贾治勇,王群,周美玲,田英良.Ni-Co合金包覆空心微珠及其吸波性能[J].功能材料,2006(01):143-145,149. |
| [9] | 刘顺华;刘军民;董星龙.电磁波屏蔽及吸波材料[M].北京:化学工业出版社,2007:217-219. |
| [10] | 杨志民,毛昌辉,杜军,杨剑,苏兰英,高兆祖.Fe4 N电磁波吸收剂的合成及其吸波性能的研究[J].稀有金属,2002(02):103-107. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%