• DocumentCode
    952784
  • Title

    Phase stability of Co5Sm

  • Author

    Martin, D.L. ; Smeggil, J.

  • Author_Institution
    General Electric Company, Schenectady, N.Y.
  • Volume
    10
  • Issue
    3
  • fYear
    1974
  • fDate
    9/1/1974 12:00:00 AM
  • Firstpage
    704
  • Lastpage
    707
  • Abstract
    Diffusion couples formed between cobalt and samarium provide useful structures for studying the Co5Sm eutectoid decomposition. The diffusion zones consist of Co, Co17Sm2, Co5Sm, Co7Sm2, Co3Sm, and Co2Sm when formed in the 820° to 1130°C range. The absence of the Co5Sm phase in the 775° couple provides supporting evidence for the eutectoid transformation and locates the eutectoid temperature at about 800°C. Couples formed above 820°C and then heat-treated below 800°C provided information on the eutectoid transformation which does not follow the classic Fe-C pearlite reaction. The possible effects of the decomposition on properties of permanent magnets are discussed.
  • Keywords
    Samarium-cobalt alloys; Aging; Annealing; Cobalt; Electrons; Heating; Magnetic properties; Permanent magnets; Stability; Temperature distribution; Thermal force;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.1974.1058480
  • Filename
    1058480
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=952784