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| 镁合金及其复合材料电磁屏蔽性能研究进展 |
| Research Progress on Electromagnetic Shielding Performance of Magnesium Alloy and Its Composites |
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| DOI：10.3969/j.issn.1674-6457.2023.04.002 |
| 中文关键词: 镁合金 电磁屏蔽 微观组织 复合 导电性 导磁性 |
| 英文关键词: magnesium alloy electromagnetic shielding microstructure compound electrical conductivity magnetic conductivity |
| 基金项目:国家自然科学基金(51971071，52011530025，U21A2049，52271098);国家重点研发计划(2021YFE0103200) |
| Author Name | Affiliation | | GUO Zheng-you | College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China | | JIA Hao-yang | College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China | | WANG Jia-hao | College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China | | FENG Xiao-yan | College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China | | HAN Ren-heng | College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China | | ZHANG Bin | College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China | | LI Jia-rui | College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China | | ZHANG Chi | College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China | | WU Rui-zhi | College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China |
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| 中文摘要: |
| 航空航天、信息通信等领域不断发展，随之产生的电磁干扰也逐渐被人们重视，面对电磁屏蔽材料兼顾结构轻量化的功能/结构一体化发展趋势，已经有越来越多的研究者将关注点放在了镁合金及其复合材料上。镁合金作为一种密度极低的金属材料，具有较高的比强度和比刚度、优异的阻尼和电磁屏蔽性能，以镁合金为基体制备复合材料可进一步提升材料的综合性能，兼具高导电性、导热性和优异力学性能的碳纳米管(CNTs)、纳米石墨烯(GNPs)等纳米碳基材料和具有特殊空心结构的粉煤灰球(FACs)均可作为镁合金复合材料的增强体，综合提升材料的力学和电磁屏蔽性能。目前，针对镁合金及其复合材料的电磁屏蔽性能研究主要集中于合金化元素选择及成分设计、热处理及加工工艺、晶粒尺寸、织构及相分布、复合材料体系设计等方面。从电磁屏蔽原理出发，综述了近年来镁合金及其复合材料电磁屏蔽性能的研究，主要对镁合金及其复合材料导电、导磁性的影响因素进行了介绍，并讨论了作为复合材料提升镁合金电磁屏蔽性能的机理，最后针对这类轻量化电磁屏蔽结构材料的应用前景进行了展望。 |
| 英文摘要: |
| With the development of aerospace, information communication and other fields, the electromagnetic interference has gradually attracted more and more attention. Facing the development trend of functional/structural integration of electromagnetic shielding materials with both structural lightweight, more and more researchers have focused on magnesium alloy and its composites. As a kind of metallic material with low density, magnesium alloy has high specific strength and stiffness, excellent damping and electromagnetic shielding performance. At the same time, magnesium matrix composites can further improve comprehensive properties of materials. Carbon nanoparticles such as carbon nanotubes (CNTs) and nano-graphene (GNPs) with high electrical and thermal conductivity and excellent mechanical properties, and fly ash balls (FACs) of special hollow structure can be used as reinforcements in magnesium matrix composites to comprehensively improve the mechanical and electromagnetic shielding properties of materials. At present, the research on the electromagnetic shielding performance of magnesium alloy and its composites mainly focuses on the selection of alloying elements and composition design, heat treatment and processing technology, grain size, texture and phase distribution, and composite system design. From the principle of electromagnetic shielding, this work reviewed the research on electromagnetic shielding performance of magnesium alloy and its composites in recent years. The influencing factors of electrical conductivity and magnetic conductivity of magnesium alloy and its composites were introduced and the mechanisms of improving the electromagnetic shielding performance were discussed. Finally, the application of this kind of lightweight electromagnetic shielding structural material is prospected. |
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