Ceramic Magnets

Ceramic Magnets

Ceramic Magnets Overview

Ceramic magnet material (Ferrite) is one of the most cost effective magnetic materials. It has a fair to good resistance toward corrosion and it can operate in moderate heat. Ceramic (Ferrite) magnets have low energy product and they are usually used in assemblies containing mild steel.

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Ceramic Magnets Properties

Grade Br
(KGs)
Hc
(Koe)
Hci(Koe) (BH)max
(MGOe)
Curie Temp.
(�C)
Max. Op. Temp
(�C)
Inquiry
Ceramic 1 2.2 1.86 3.25 1.10 450 300 Inquiry
Ceramic 5 3.8 2.4 2.5 1.1 450 300 Inquiry
Ceramic 7 3.4 3.25 4.0 2.75 450 300 Inquiry
Ceramic 8 3.85 2.95 3.20 3.5 450 300 Inquiry
Ceramic 10 4.2 2.95 3.05 4.2 450 300 Inquiry

 

Key Advantages

  • Do not rust
  • Cheap but strong
  • Hard to demagnetize
  • Able to be magnetized with multiple poles
  • Need no surface treatment

Quick Leads

  • Density - 4.95 g/cm3
  • Manufacturing process - sintering (most common), injection molding, extruding or calendaring
  • Various shapes - discs, bars, rings, blocks, arc segments, cylinders, etc
  • Wide range of grades - from 0103 to 0404. (First 2 digits represent BH.max, and second two digits represent Intrinsic Coercivity, Hci.)
  • Saturation magnetizing field required - about 10kOe
  • The energy product of Flexible magnets is, however, much lower than that of fully dense, sintered Ferrite magnets

Common Applications

Craft projects  Magnetic separators  Automotive sensors  Refrigerator magnets  MRI  DC motors


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