（School of Materials Science and Engineering, Beihang University, Beijing 100191, China）
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DOI:
10.7502/j.issn.1674-3962.2012.07.02
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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.