铁磁/介电复合颗粒及相应涂层的电磁性能研究

项目名称： 铁磁/介电复合颗粒及相应涂层的电磁性能研究

项目编号： No.51201048

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 金属材料学科

项目作者： 姜建堂

作者单位： 哈尔滨工业大学

项目金额： 25万元

中文摘要： 本项目拟通过实验研究与数值模拟相结合的方法对铁磁/介电复合颗粒及相应涂层性能调控中的难点问题进行系统研究。拟通过静态电磁性能的引入间接建立微观组织结构－电磁性能的联系，并通过系统设计工艺分析各因素的影响。分别就晶体结构、晶体缺陷、形状尺寸等因素的影响开展研究，获得影响规律、阐明影响机理，并在此基础上建立铁磁/介电复合颗粒电磁性能控制的方法。通过数值模拟方法对涂层中电磁波的行为进行研究，获得颗粒含量、形状及分布特性对传输、散射和损耗行为的影响，并据此优化涂层的阻抗特性、充分挖掘铁磁/介电复合颗粒的电磁损耗潜能,建立涂层设计的方法。此项目的的实施可为铁磁/介电复合颗粒及相应吸波涂层的研制提供理论基础，推动其发展和应用。此外，铁磁/介电复合颗粒及涂层中电磁波与材料相互作用行为的研究对于揭示复合材料电磁性能机理具有重要意义。

中文关键词： 铁磁介电复合颗粒；微波电磁性能；微观组织结构；填充率；吸波性能

英文摘要： The current work is set to investigate the problems on the electromagnetic (EM) properties tailoring in ferromagnetic/dielectric composite particles and the relevant electromagnetic wave absorbing (EMA) coatings. Experiment and computer simulation is to be carried out synergistically to perform the investigation. Static magnetic properties and electric conductivity will be introduced to establish an indirect correlation between the microstructure and the EM propeties. The effect of process parameters is to investigated based on a systemically arranged process experiment.Specifically, the effect of crystal structure, defects and morphology will be examined to obtain the relevant principle and to clarify the mechanism. A method can further be estabilished to tailor the EM properties of the ferromagnetic/dielectric comosite particles. The behavior of the electromagnetic wave in the relevant EMA coatings is to be investigated via the computer simulation. The effect of filler's charecteristics on the transmission and dissipation will be analyzed in a preinstall mode. Specifically, the effect of concentration, shape, size and distribution of the fillers will be empasized. Baed on the results of simulation, impedance optimazation can be achieved in the EMA coatings and the potential of the filler can thus be fully ex

英文关键词： Ferromagnetic/dielectric composite；elecromagnetic properties；microstructure；filling ratio；microwave absorbing performance