Xu Wanting, Liu Na, Lu Zhongchen
School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China.
Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, Guangzhou 510640, China.
Materials (Basel). 2024 Aug 15;17(16):4058. doi: 10.3390/ma17164058.
As a result of continuing scientific and technological progress, electromagnetic waves have become increasingly pervasive across a variety of domains, particularly within the microwave frequency range. These waves have found extensive applications in wireless communications, high-frequency electronic circuits, and several related fields. As a result, absorptive materials have become indispensable for dual-use applications across both the military and civilian domains because of their exceptional electromagnetic wave absorption properties. This paper, beginning with the operating mechanisms of absorptive materials, aims to provide an overview of the strategies that have been used to enhance the absorption performance of iron-based magnetic absorbers (IBMAs) and discuss the current research status of absorptive material components. The fabrication of a ferromagnetic absorber in terms of morphology, heterointerface coupling, and macrostructural enhancements and the effect of powder characteristics on their electromagnetic properties are discussed. Additionally, the application of IBMAs in elastomers is summarized. Finally, this paper summarizes the limitations of existing ferromagnetic absorber materials and offers a perspective on their potential future developments. The objective of the ongoing research is to fabricate absorptive components that have thin profiles, lightweight construction, wide absorption frequency ranges, and strong absorption capabilities.
由于持续的科技进步，电磁波在各个领域的普及程度日益提高，尤其是在微波频率范围内。这些波在无线通信、高频电子电路及其他相关领域得到了广泛应用。因此，吸收材料因其卓越的电磁波吸收特性，在军事和民用领域的两用应用中变得不可或缺。本文从吸收材料的作用机制入手，旨在概述用于提高铁基磁吸收体（IBMAs）吸收性能的策略，并讨论吸收材料组件的当前研究现状。讨论了铁磁吸收体在形态、异质界面耦合和宏观结构增强方面的制备方法以及粉末特性对其电磁性能的影响。此外，还总结了铁基磁吸收体在弹性体中的应用。最后，本文总结了现有铁磁吸收体材料的局限性，并展望了它们未来可能的发展方向。当前研究的目标是制造出外形薄、重量轻、吸收频率范围宽且吸收能力强的吸收组件。
