场致电阻材料在强电磁脉冲防护中的应用展望  

Application and prospect of field induced resistance material in strong electromagnetic pulse protection

作　　者：刘嘉玮[1] 王建江[1] 许宝才[1] 

机构地区：[1]石家庄军械工程学院先进材料研究所,石家庄050003

出　　处：《功能材料》2017年第10期10029-10035,共7页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51172282)

摘　　要：为同时实现电子信息装备正常电磁环境下工作和强电磁脉冲下电磁防护的双重功能,介绍了一种在电磁场下具有变阻抗特性的智能电磁防护材料,场致电阻材料。该防护材料利用其在强电磁场下发生绝缘体/导体相变的特性,可以实现在强电磁脉冲辐射下防护材料由高阻抗向低阻抗的转变。场致电阻材料用于电磁防护具有电磁能量选择特性,对于低功率的安全电磁波可以高效透射,而对高功率的电磁脉冲则有效屏蔽,从而达到快速感知电磁环境变化并迅速调节电磁性能的要求。介绍了几种场致电阻材料,分析了其在电磁脉冲防护领域中应用的优缺点,并对未来强电磁脉冲防护材料的发展进行了展望。To realize the dual function of electromagnetic protection under strong electromagnetic pulse and normal work of the electronic equipment in normal electromagnetic environment, an intelligent electromagnetic protection material, field induced resistance material, based on the characteristic of variable impedance is introduced. The shielding material use the insulator/conductor phase transition properties, which can achieve the high impedance state transition to a low resistance state in strong electromagnetic pulse radiation. The field induced resistance material which is applied for electromagnetic protection has the characteristics of electromagnetic energy selection. The safe electromagnetic wave with low power can be transmitted efficiently and the electromagnetic pulse with high power can be effectively shielded. Finally, the material can rapidly achieve the sensing of electromagnetic environment changes and quickly adjust the electromagnetic performance requirements. In this paper, several new materials with variable impedance characteristics are proposed. Their advantages and disadvantages are analyzed, and the future development of electromagnetic energy selective materials is prospected.

关 键 词：强电磁脉冲 场致电阻材料 电磁能量选择 

分 类 号：TB3[一般工业技术—材料科学与工程]