• DocumentCode
    1018351
  • Title

    NdFeB magnets with zero temperature coefficient of induction

  • Author

    Ma, Bao-Min ; Narasimhan, K. S V L ; Hurt, J.C.

  • Author_Institution
    IEEE TMAG
  • Volume
    22
  • Issue
    5
  • fYear
    1986
  • fDate
    9/1/1986 12:00:00 AM
  • Firstpage
    1081
  • Lastpage
    1083
  • Abstract
    Temperature compensation for the induction of NdFeB type magnets has been investigated. A computer assisted alloy selection method was adopted to identify composition of zero temperature coefficient of induction over -50 to 200°C. Selected alloys were processed into magnet by the conventional powder metallurgy method. The experimental temperature coefficient on the sintered magnet correlated with the prediction satisfactory. Holmium is an essential ingredient required for temperature compensation of NdFeB magnets. A magnet, (Nd0.23Ho0.64Dy0.13)15Fe79B6with Brof 7,700 Gauss, Hcof 7,700 Oe, Hciof 20,600 Oe, BHmaxof 14.8 MGOe and temperature coefficient of -0.029% per °C over -50 to +150 was obtained.
  • Keywords
    Magnetic thermal factors; Permanent magnets; Atmospheric measurements; Copper alloys; Demagnetization; Magnetic circuits; Magnetic properties; Magnets; Neodymium; Powders; Saturation magnetization; Temperature dependence;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.1986.1064515
  • Filename
    1064515
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1018351