基于LTCC技术的新型铁电/铁磁多铁性复合材料基础研究

项目名称： 基于LTCC技术的新型铁电/铁磁多铁性复合材料基础研究

项目编号： No.50872017

项目类型： 面上项目

立项/批准年度： 2009

项目学科： 武器工业

项目作者： 贾利军

作者单位： 电子科技大学

项目金额： 30万元

中文摘要： 电子设备的高速发展对器件集成化、小型化、片式化的要求越来越高，磁电复合材料因其兼具电容、电感特性，能够在单一元件中实现多种功能而成为解决器件集成化、缩小器件体积的重要材料，可作为抗电磁干扰器件的基板材料。项目以 PZT/NiCuZn铁氧体多铁性复合材料为主要研究对象，实现从材料研制、器件设计到制造工艺的综合调控，为开发基于LTCC技术的高性能复合材料和抗EMI滤波器奠定理论和实践基础。研究了复合材料化学组成、工艺参数、合成方法等对复合材料微观结构和电磁性能的影响规律和机理；揭示了Bi离子取代，Bi2O3、Bi2O3-P2O5、Bi2O3-Co2O3、Bi2O3-P2O5-Co2O3等掺杂剂对低温烧结复合双性材料的烧结行为和综合电磁性能的改性机制。采用研制的低温烧结复合材料作为基板材料，建立电容、电感模型，利用ADS和HFSS软件对滤波器拓扑电路和三维物理结构进行仿真，设计出低通滤波器。在LTCC生产线上加工制作滤波器样品，实测结果与仿真基本吻合。微观形貌分析显示复合材料与银导体共烧良好，验证了铁氧体复合材料制作LTCC滤波器的可行性。

中文关键词： 复合材料；低温烧结；微观结构；电磁性能

英文摘要： With the rapid development of electronic device，it becomes more and more important for the electronic components to the direction of small size, multi-functional and chip-functional. Ferroelectric-ferromagnetic composite materials possess inductance and capacitance characteristics, and potential widely application as compact electrical filters for anti-EMI. The research object of this work is low-temperature sintered multiferroic PZT/NiCuZn ceramic-ferrite composite materials. To lay the theoretical and practical foundation for high performance composites and filters based on LTCC technology, many works on the composite material development, device design and manufacturing process were finished. The influence law and mechanism of chemical composition of composite materials, synthesis methods and process parameters on the microstructures and electromagnetic properties were investigated. The modification mechanism of substitution of Bi ions and doping of Bi2O3, Bi2O3-P2O5, Bi2O3-Co2O3, and Bi2O3-P2O5-Co2O3 on the sintering behaviors and combination performance were revealed. The prepared PZT/NiCuZn composite materials were chosen to design the anti-EMI low pass filter by using of LTCC technique. The ADS and HFSS software simulated circuit diagram and three dimensional structures to design the low pass filters. According to the simulating results, LTCC technology was adopted to fabricate the samples. The testing results basically are consistent with the simulation data. The good co-firing of composite materials and the silver conductor were observed. It is verified that these composite materials can be used in the manufacture of LTCC filter.

英文关键词： composite materials;low-temperature sintering; microstructures; electromagnetic properties