• DocumentCode
    867321
  • Title

    Oxidation of (Nd,Dy)FeB permanent magnets investigated by 57 Fe Mossbauer spectroscopy

  • Author

    Le Breton, J.M. ; Teillet, J.

  • Author_Institution
    LPCM INSA, Mont St. Aignan, France
  • Volume
    26
  • Issue
    5
  • fYear
    1990
  • fDate
    9/1/1990 12:00:00 AM
  • Firstpage
    2652
  • Lastpage
    2654
  • Abstract
    The corrosion behavior of (Nd,Dy)FeB permanent magnets has been studied in oxidizing environments by conversion electron and transmission Mossbauer spectroscopy. It is found that the Nd2Fe14B hard magnetic phase is not affected by ageing in 90°C with 50% and 90% relative humidity. The oxidation occurs in the Nd-rich region, and the main oxidation products are Nd2O3 and Nd(OH)3. At 200°C in ambient atmosphere, the oxidation occurs both in the Nd2Fe 14B and the Nd-rich phases, with the appearance of Nd2 O3, an inhomogeneous phase close to α-Fe and unidentified phases, which could be β, π, or τ
  • Keywords
    Mossbauer effect; boron alloys; corrosion; dysprosium alloys; ferromagnetic properties of substances; iron alloys; neodymium alloys; permanent magnets; 57Fe Mossbauer spectroscopy; NdDyFeB; corrosion behavior; oxidation; Aging; Atmosphere; Corrosion; Electrons; Humidity; Iron; Neodymium; Oxidation; Permanent magnets; Spectroscopy;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/20.104827
  • Filename
    104827
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=867321