Fe_3N和Fe_4N粉状化合物的合成及其电磁特性研究  

Preparation and electromagnetic characteristic of Fe_3N and Fe_4N particles

作　　者：任国强[1] 唐章宏[1] 郭红霞[1] 汤云晖[1] 王群[1] 

机构地区：[1]北京工业大学材料科学与工程学院,北京100124

出　　处：《功能材料》2010年第4期604-606,609,共4页Journal of Functional Materials

基　　金：国家高技术研究发展计划(863计划)资助项目(2007AA06Z320)

摘　　要：纯铁粉在氨和氢的气氛中进行固气反应合成Fe3N和Fe4N粉状化合物。研究了氨气和氢气比例、温度以及时间对固气反应产物的影响,进而分别获得纯相粉状Fe3N和Fe4N化合物。利用矢量网络分析仪测试了Fe3N和Fe4N的磁导率和介电常数,并与市售铁氧体进行了比较。发现在1MHz～1GHz频段内,Fe3N和Fe4N的磁导率低于铁氧体,介电常数均高于铁氧体,且Fe4N的电磁性能优于Fe3N。The particles of Fe3N and Fe4N were synthesized by the solid-gas reaction method.The effects of process parameters on the products such as the ratio of NH3/H2,the reaction temperature and the holding time of reaction temperature were investigated.The pure Fe3N and Fe4N compounds in particle form were obtained basing on the investigation.The permeability and permittivity of Fe3N and Fe4N were measured by vector network analyzer.Comparison results show that when the frequency ranges from 1MHz to 1GHz,the permeability of Fe3N and Fe4N is lower than that of ferrite,but the permittivity is higher than that of ferrite,and the electromagnetic characteristics of Fe4N are better than that of Fe3N.

关 键 词：Fe3N Fe4N 工艺参数 磁导率 介电常数 

分 类 号：TG132.27[一般工业技术—材料科学与工程]