基于LaCoFeO_(3)Co_(x)Fe_(y)的高性能电磁波吸收材料研究  

High performance electromagnetic wave absorbing materials based on LaCoFeO_(3)Co_(x)Fe_(y)

作　　者：晏金辉 叶升言 张明明 杨金培 马瑞 YAN Jinhui;YE Shengyan;ZHANNG Mingming;YANG Jinpei;MA Rui(Dehong Power Supply Bureau of Yunnan Power Grid Co.,Ltd.,Dehong Prefecture 678499,Yunnan Province,China;Kunming Nengren Technology Co.,Ltd.,Kunming 650000,China)

机构地区：[1]云南电网有限责任公司德宏供电局,云南德宏州678499 [2]昆明能瑞科技有限公司,云南昆明650000

出　　处：《电子元件与材料》2025年第1期15-23,共9页Electronic Components And Materials

基　　金：南方电网公司科技项目(CG0500062001536074)。

摘　　要：为了提高配网线路缺陷感知装置的电磁信号识别距离,研究提出了基于LaCoFeO_(3)Co_(x)Fe_(y)的电磁波吸收材料,通过脱溶策略将纳米Co_(x)Fe_(y)合金颗粒均匀嵌入至钙钛矿氧化物LaCoFeO_(3)基体表面,能有效避免团聚效应,优化材料的电磁波吸收性能。实验结果显示,随着硝酸钴添加量的增加,材料中的Fe0和Co0含量降低,电导率先增加后减少,而衰减常数显著增加,雷达截面值降低。特别是,当硝酸钴添加量为0.5 mmol时,材料在10 GHz频率下的衰减常数达到143,表现出优异的电磁波吸收性能。该电磁波吸收材料可应用于配网线路缺陷感知装置中,能有效提高装置的电磁信号感应距离,对于提升电子设备性能和电磁信号识别技术具有重要意义。To improve the electromagnetic signal recognition distance of the defect sensing device for distribution network lines,an electromagnetic wave absorbing material based on LaCoFeO_(3)Co_(x)Fe_(y)was proposed.Nano Co_(x)Fe_(y)alloy particles were uniformly embedded on the surface of the perovskite oxide LaCoFeO_(3)matrix through a dissolution strategy,which can effectively avoid agglomeration effects and optimize the electromagnetic wave absorption performance of the material.The experimental results show that with the increase of cobalt nitrate addition,the content of Fe0 and Co0 in the material decreases,the conductivity first increases and then decreases,while the attenuation constant significantly increases and the radar cross-section value decreases.Especially,when the amount of cobalt nitrate doption is 0.5 mmol,the attenuation constant of the material reaches 143 at a frequency of 10 GHz,demonstrating excellent electromagnetic wave absorption performance.This electromagnetic wave absorbing material can be applied in the defect sensing devices for distribution network lines,which can effectively improve the electromagnetic signal induction distance of the device.It is of great significance for improvement of the electronic equipment and electromagnetic signal recognition technology.

关 键 词：电磁波材料 LaCoFeO_(3)Co_(x)Fe_(y) 磁损耗 电磁波吸收性能 

分 类 号：TB34[一般工业技术—材料科学与工程]