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[Yang Youwen,Wang Yongle,Yang Lei,Chen Yufan,Jiang Nan,Fang Xiaogang,Gao Qinguo and Liu Jiguang.Influence of Binder Content on Mechanical and Magnetic Properties of Bonded NdFeB Magnets[J].Rare Metal Materials and Engineering,2022,51(8):2727~2731.]
Influence of Binder Content on Mechanical and Magnetic Properties of Bonded NdFeB Magnets
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Received:July 02, 2021  Revised:September 02, 2021
DOI:
Key words: bonded NdFeB magnets  magnetic ring  binder content  mechanical properties  magnetic properties
Foundation item:合肥市关键技术重大研发项目(J2020G20)和安徽省高校2020质量工程项目(2020jyxm1514)
Author NameAffiliation
Yang Youwen,Wang Yongle,Yang Lei,Chen Yufan,Jiang Nan,Fang Xiaogang,Gao Qinguo and Liu Jiguang  
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Abstract:
      As an essential component in the preparation of bonded NdFeB magnets, the function of binder is to improve the fluidity of magnetic powder particles and the bonding strength, ensuring the mechanical and magnetic stability of products. The selection of binder content and its effects on the mechanical and magnetic properties of bonded NdFeB magnets were studied by combining theory with experiment. On this basis, high performance bonded NdFeB magnets were prepared. The structure and morphology of the magnet were characterized by the scanning electron microscope (SEM). The magnetic and mechanical properties of ring-shaped bonded NdFeB magnet (RSM) were measured under conditions of NIM-200C hysteresigraph and electro-mechanical universal testing machines (AG-X plus), respectively. The results demonstrate that bonded NdFeB magnet with 3wt% binder is able to achieve the highest density of 5.59 g/cm3 and the highest compressive strength of 159 MPa with the optimum value of magnetic properties.