Ferrite
Ferrite
magnets are more commonly referred to as ceramic magnets. They are
mostly composed of strontium and Iron oxide (SrO .
6Fe2O3) and offer solid performance with their low cost, higher
coercive force than alnico and low recoil permeability. They are
widely used for loudspeakers, small motors, generators, and rotors.
Hitachi Metals America, Ltd. (HMA) offers a complete line of ceramic magnets.
Characteristics
- Low cost
- Strong resistance to corrosion
- Easy to magnetize, thus allowing magnetization after assembly
- Lower energy products than alnico or rare earth magnets
- Very stable when exposed to temperature or stray fields
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