纳米铁和氮化铁超顺磁体复合吸收剂的研制  

The study of superparamagnetic nanometer iron and nitrided iron as compound obsorber

作　　者：王贺[1] 周忠祥[1] 孙洪国[1] 秦汝虎[1] 尹丽娣[1] 张海丰[2] 

机构地区：[1]哈尔滨工业大学应用物理系,黑龙江哈尔滨150001 [2]佳木斯大学物理系,黑龙江佳木斯154007

出　　处：《材料科学与工艺》2006年第5期457-459,共3页Materials Science and Technology

基　　金：国家自然科学基金资助项目(9510326)

摘　　要：为了以纳米氮化铁作为吸波材料的吸收剂，利用气相化学反应方法，以氨基有机络合物为活化剂，液态五羰基铁为原料，获得了纳米量级亚单畴磁性氮化铁颗粒．利用TEM和S参数测量仪分析产物的结构和电磁参数．研究表明：制备的材料颗粒尺寸大都在10～100nm之间，材料主要由Fe和Fe3N的混合物组成；材料在微波段（8～13GHz）具有一定的介电损耗和磁损耗，可用作吸波材料的吸收剂．计算表明，在该波段，1mm厚度的吸波材料对电磁波能量最高衰减可达到10dB以上，具有较好的性能，可作为雷达吸波材料．Vapor phase chemical treatment is employed to prepare nanometer superparamagnetic material as absorbent, and the activator of the experiment is amino organic complex compound, the material is liquid organic Fe（CO） 5. Nanometer inferior single domain magnetic nitrided iron particular is obtained. Test by TEM and S parameter measurement shows that the size of the prepared material is between 10 - 100 nm, the essential component is compound of Fe and Fe3N. The material which possesses lossy dielectric and magnetic parameter in microwave band （8- 13 GHz）, can be used to absorb electromagnetic energy. The analytical result shows that the material with the thickness of 1 mm can attenuates electromagnetic energy more than 10 dB, and it is a well radar absorbing material （RAM）.

关 键 词：超顺磁体 亚单畴 氮化铁 雷达吸波材料 

分 类 号：O441.6[理学—电磁学]