铁氧体压延粘结磁体的制备及性能 preparation and properties of bonded hard ferrite magnet by rolling process.pdfVIP

综述·动态·评论 铁氧体压延粘结磁体的制备及性能 1 2 3 介 军 ，王泽温 ，范志康 （1. 山西晋能钢结构有限责任公司，山西太原 030006 ； 2. 西北工业大学 材料学院，陕西西安 710048 ； 3. 西安理工大学 材料学院，陕西西安 710032 ） 摘 要：利用国产原料制备了压延取向粘结铁氧体磁体。采用塑料邵氏硬度实验方法和塑料拉伸实验方法 对粘结磁体的硬度、抗拉强度和伸长率进行了测试，用 DGY-2 型多功能永磁测量仪测量了磁体的磁性能，并用 扫描电镜对磁粉颗粒及粘结磁体拉伸断口形貌进行观察研究。结果表明，所制备的各向同性和各向异性粘结磁 体分别达到或超过国际标准中牌号 Hard ferrite 7/18p 和 Hard ferrite 9/17p 的性能水平。为了生产出高性能的铁氧 体粘结磁体，国产磁粉的细磨工艺还需进一步改进。 关键词：铁氧体粘结磁体；压延成型；磁粉形貌；断口形貌；磁性能；力学性能 + 中图分类号：TM277 .5 文献标识码：B 文章编号：1001-3830(2006)03-0050-03 Preparation and Properties of Bonded Hard Ferrite Magnet by Rolling Process 1 2 3 JIE Jun , WANG Ze-wen , FAN Zhi-kang 1. Shanxi Jinneng Steel Structure Co. Ltd, Taiyuan 030006, China; 2. College of Material Science and Engineering, Northwestern Polytechnical University, Xi,an 710048, China; 3. College of Material Science and Engineering, Xi’an University of Technology, Xi,an 710032, China Abstract ：Bonded hard ferrite magnets were prepared by rolling process using domestic material. The hardness and tensile test and magnetic properties measurement were performed, and morphology of magnetic powder and tensile fractography of rolled magnet are observed by scanning electron microscopy. The results show that the isotropic and anisotropic rolled magnets reach or surpass that of hard ferrite 7/18p and 9/17p of international standard. In order to obtain high quality rolled hard ferrite magnets, it is necessary to improve the fine grinding of magnetic powder. Key words ：bonded hard ferrite magnet; rolling; powder mor