颗粒包覆软磁复合材料制备和电磁特性研究进展-中国材料进展

文章信息/Info

Title:: Progress on Preparation and Electromagnetic Properties of Soft Magnetic Composite Materials (SMCs) Based on the Coated Metal Magnetic Powders

Author(s):: YANG Bai; ZHANG Lei; LI Rongfeng; YU Ronghai; （School of Materials Science and Engineering, Beihang University, Beijing 100191, China）

摘要:: 具有大功率、低损耗及高温使用特性的软磁复合材料是目前磁性材料领域研究的一个重要方向。这种材料可以制备特定环境使用的高性能电磁部件，如高温和高速电机的转子，在航空航天、电子电工、能源和混合动力汽车等领域有着潜在的应用前景。由于软磁复合材料具有较低的成本和较好的耐蚀性，有希望发展成为实用的新型软磁材料，弥补传统金属软磁材料和软磁铁氧体使用性能的不足，一直受到人们的重视并得到了广泛的研究。结合作者所在实验室近几年来在软磁复合材料领域的研究工作，介绍国内外在金属磁性颗粒包覆软磁复合材料的制备工艺、界面结构和电磁特性及其应用的研究进展。根据研究现状和实际应用的要求，提出软磁复合材料研究所面临一些问题，并对这类材料的发展进行展望。

Abstract:: The soft magnetic composites (SMCs) for high power, low loss and high temperature applications are an important kind of soft magnets and attract much research interest these years. These materials can be prepared into high performance magnetic devices in special situations, such as high speed rotors in high temperature and high speed electrical machines, which show a latent use in the fields of aerospace, electrician, electron, energy and hybrid cars. Compared with traditional soft magnet such as metal soft magnetic material, the SMCs have the advantages of lower cost and higher corrosion resistance. So the SMCs are considered as another kind of new soft magnet that may cover the shortage of the usability of traditional soft magnet, and receive much attention and extensive research. The recent research progress on preparation methods, interfacial structure, electromagnetic properties and applications of the SMCs based on the coated metal magnetic powders is discussed systematically, and the research work on SMCs in our lab is also introduced briefly in this paper. According to present research situation and the requirements of practical application of SMCs, the challenges in the research of these materials are posed and the development of SMCs is also discussed later.