J4 ›› 2012, Vol. 50 ›› Issue (4): 789-792.

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Influences of Grain Size and Heat\|Treatment on |Magnetic Properties
and Synthesis of Soft/Hard Magnetic Composite Materials

MENG Lei 1,2,3,  |LIU Li 1,4, |ZHANG Ying1, |DING Li2, |LU Da-yong3, |WANG Xian-de 2, |WANG Hai-yan1,2   

  1. 1. College of Physics, Beihua University, Jilin 132011, Jilin Province, China;
    2. College of Science, Jilin Institute of Chemical Technology, Jilin 132022, Jilin Province, China;
    3. Materials Science and Engineering Research Center, Jilin Institute of Chemical Technology, Jilin 132022,
    Jilin Province, China|4. College of Physics, Jilin University, Changchun 130012, China
  • Received:2011-10-26 Online:2012-07-01 Published:2012-09-07
  • Contact: LIU Li E-mail:liuli.62@163.com

Abstract:

 Sm2Fe17N3/Fe3N/BN  composite magnetic material was prepared by means of high\|energy ball\|milling and vacuum annealing treatment. Solid\|state phase transformation  and magnetic performance were investigated. The results show that the conditions  of the generation of Sm2Fe17N3 and Fe3N are the   grain size of Fe comes up to  nanometre (D<80 nm) and forms Fe(Sm) solid solution. The crystal substance of  Sm2Fe17N3/Fe3N/BN in the ball\|milling material vacuum annealing at 300 ℃ was increased and   coercivity was increased with increasing annealing time. That is magnetic property of the sample has something to do with the degree of crystallinity of Sm2Fe17N3.

Key words: Sm2Fe17N3/Fe3N/BN, soft/hard magnetic composite material, high\, energy ball\, milling, vacuum annealing

CLC Number: 

  • O469