• DocumentCode
    952924
  • Title

    On the abrasivity of γ-Fe2O3and CrO2magnetic tapes

  • Author

    Mayer, D.H.

  • Author_Institution
    BASF AG, Ludwigshafen, Germany
  • Volume
    10
  • Issue
    3
  • fYear
    1974
  • fDate
    9/1/1974 12:00:00 AM
  • Firstpage
    657
  • Lastpage
    659
  • Abstract
    The abrasivity of CrO2and γ-Fe2O3particles has been compared in polishing experiments using typical head materials as test surfaces. In the hardness range of 1800 - 8000 N/mm2CrO2abrasivity decreases linearly with increasing hardness. Gamma ferric oxide behaves similarly up to 3000 N/mm2but its abrasivity drops off sharply at higher hardness values. This difference is interpreted in terms of particle hardness. Using heads with mumetal pole tips the abrasivity of CrO2and γ-Fe2O3audio tapes has been studied as a function of tape speed and humidity. In addition, a random selection of commercially available tapes has been evaluated. It has been found that on mumetal heads CrO2and γ-Fe2O3tapes are equally abrasive.
  • Keywords
    Chromium oxides; Iron oxides; Magnetic tape materials; Abrasives; Audio tapes; Coatings; Inorganic materials; Magnetic heads; Materials testing; Powders; Rough surfaces; Surface finishing; Surface roughness;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.1974.1058494
  • Filename
    1058494
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=952924