• DocumentCode
    438323
  • Title

    A comparative study of the microstructure and magnetic properties of melt-spun RE2Fe14B/α-Fe and RE2Fe14B/Fe3B nanocomposites

  • Author

    Chen, Z.M. ; Brown, D.N. ; Ma, B.M. ; Campbell, P.

  • Author_Institution
    Magnequench Inc., Singapore, Singapore
  • fYear
    2005
  • fDate
    4-8 April 2005
  • Firstpage
    1645
  • Lastpage
    1646
  • Abstract
    The microstructure and magnetic properties of RE2Fe14B/α-Fe and RE2Fe14B/Fe3B nanocomposites are compared using X-ray diffractometry, thermogravimetric analysis, transmission electron microscopy, and magnetometry. The compositions of Nd9Fe86B5, Pr9Fe86B5, Nd9Fe79B12 and Pr9Fe79B12 are prepared using an arc melting and melt spinning route. E9Fe86B5 samples are found to exhibit finer and more uniform microstructures, higher Br, (BH)max and more square demagnetization curves than their RE9Fe79B12 equivalents. The higher performance of RE2Fe14B/α-Fe nanocomposites can be attributed to the more favorable intrinsic magnetic properties of α-Fe and a much finer structure. The results indicate that RE2Fe14B/α-Fe is a more desirable system for future developments of high performance nanocomposite magnets.
  • Keywords
    X-ray diffraction; boron alloys; crystal microstructure; demagnetisation; grain refinement; iron alloys; melt spinning; nanocomposites; neodymium alloys; praseodymium alloys; soft magnetic materials; thermal analysis; transmission electron microscopy; Nd9Fe79B12-Fe; Nd9Fe79B12-Fe3B; Nd9Fe86B5-Fe; Nd9Fe86B5-Fe3B; Pr9Fe79B12-Fe; Pr9Fe79B12-Fe3B; Pr9Fe86B5-Fe; Pr9Fe86B5-Fe3B; X-ray diffractometry; arc melting; demagnetization; intrinsic magnetic properties; magnetometry; melt-spinning; microstructures; nanocomposites; thermogravimetric analysis; transmission electron microscopy; Iron; Magnetic analysis; Magnetic force microscopy; Magnetic properties; Microstructure; Nanocomposites; Neodymium; Spinning; Transmission electron microscopy; X-ray diffraction;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
  • Print_ISBN
    0-7803-9009-1
  • Type

    conf

  • DOI
    10.1109/INTMAG.2005.1464256
  • Filename
    1464256
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=438323