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Ferrite
  •   Magnetic Properties

  •   Applications

  •   Manufacturing Process


  •  
    FERRITE
     
         
     
     
     

    Ferrites are a class of chemical compounds with the formula AB2O4, where A and B represent various metal cations, usually including iron. They are generally composed of iron and barium or strontium oxides. Ferrite magnets are very hard, but brittle ceramic products. They are characterized by a vey high normal and intrinsic coercive force, but a rather low residual induction and are virtually free from the effects of a self-demagnetization. They posses a very high electrical resistivity that makes them ideally suited for high frequency applications as the eddy current losses are almost negligible.

    Corrosion resistance property of ferrite is very good and as such ni surface treatments are required.

    Machining

    Ferrite magnets are prone to chipping ad cracking due to their brittleness. Special machining techniques such as grinding with diamond tools are required for matching the dimension specifications.

     
     Properties
     
     
    Material
    Iso / Anisotropic
    Remanence
    Coercivity
    Intrinsic Coercivity
    Max. Energy Product
       
    Br(Gs)
         



    bHc (KA/m)
    bHc Oe
    iHc (KA/m)
    iHc Oe
    BH max (KJ/m3)
    BH max (MGOe)
    Y10 T
    Isotropic
    >2000
    128 - 160
    16000 - 20000
    128 - 160
    1600 - 2000
    6.4 - 9.6
    0.8 - 1.2
    Y20
    Anisotropic
    3200 - 3800
    128 - 192
    16000 - 24000
    140 - 180
    1750 - 2250
    18.36 - 21.5
    2.3 - 2.7
    Y25
    Anisotropic
    3600 - 3900
    135 - 170
    17000 - 2140
    140 - 200
    1700 - 2510
    22.5 - 28.0
    2.8 - 3.2
    Y30
    Anisotropic
    3800 - 4000
    175 - 210
    2200 - 2640
    180 - 220
    2200 - 2770
    26.0 - 30.0
    3.3 - 3.8
    Y30 BH
    Anisotropic
    3800 - 4000
    230 - 275
    2890 - 3460
    235 - 290
    2950 - 3650
    27.0 - 32.5
    3.4 - 4.1
    Y35
    Anisotropic
    4000 - 4200
    160 - 190
    2010 - 2380
    165 - 195
    2070 - 2450
    30.0 - 33.5
    13.8 - 4.2
     
     
     
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